core15 muzzle brake
-core15 muzzle brake
Long story made long, it reduced recoil by almost 69% but, holy crap, watching the slow-mo it pretty clearly kicks the muzzle down hard and it looks pretty awesome. Note: there is no comparison whatsoever between the inch measurements in this test and those in the previous 5.56 tests (or the .30 cal test). core15 muzzle brake . CMMG SV Brake Compensator Since the name of this muzzle device indicates it is both a brake and a compensator, we feel compelled to include it here. New price $89 and up Venom Defense & Design AR-10, 2-Port Compensator I remember you finding some erosion on an aluminum brake in one of your other tests. Strike Industries Checkmate Comp The Checkmate Comp is designed with a series of four off-set serrated angled prongs which stabilize climb and recoil. Weight:4.691oz (2.5 oz in titanium) if you are, let me know and well send over some of the Indian Creek Design BFDs. core15 muzzle brake. In addition, we also see blast deflectors, which are simple concussion-reducing muzzle devices that push blast out and away from the shooter, making for a better overall experience at the range. If so, which ones? All of the public ranges around Denver are indoor. Material:steel Weight:4.198oz With the top vents starting after the first port, it appears to have a more controlled amount of muzzle rise compensation than the other VD brake tested above. Material: 17-4PH stainless steel Although I had actually hoped for a bit more, this is certainly nothing to sneeze at. core15 muzzle brake - acesso.plataformadecursos.org CORE .223/5.56 Muzzle Brake - CORE Rifle Systems Again, Id say the machining and finish on the steel one is about average, but the time spent sandblasting the titanium one has removed tool marks and teeny burrs and has effectively made it flawless. Dead/ Bad Links Dynamic Resistance Muzzle Break In one of the earlier tests there was a brake with a few upwards-venting holes that could be plugged with set screws, and the recoil difference between wide open and plugged was too tight to properly measureI suppose the gas that would have gone out the top was, once the vents were plugged, now interacting with the baffles. People always ask me why my ARs are so quiet on the range. Weight:4.48 oz Eine andere -Site. I think theyre all going to be pretty dang similar to the point where you may as well choose the one that you think looks the best or is at the right price or works with the muzzle device you want to run when the blast forwarder isnt on there. Finish:Ionbond DLC ^^^^^^^. I stopped using it pretty fast. Weight:2.796 oz I think its fair to say that Phase 5 was going for some loud aesthetics when they came up with the FATman brake. Clearly, a lot of people find the triangular shape compelling and wanted to know how the recoil reduction stacks up. Apex Tactical Enhanced Stabilization Attachment: Enhanced Stabilization Attachment is a bit marketing-lingo-heavy for my tastes, but this muzzle brake has a good reputation for performance. Weight:2.637 oz Like the SJC Titan Comp was ~.4 better than the Precision Armament M4-72, but it weighs ~3.1oz more. We also see flash hiders combined with muzzle brakes. Anyone looking to change, sometimes dramatically so, the impulse feel of their rifle should consider a muzzle brake. Crap. core15 muzzle brake core15 muzzle brake. Weight:1.58oz MSRP:$90. Here is my shortlist, of what I like as the best Best AR-15 Muzzle Brakes, with expanded comments below. Thats why the procedure for the flash hiding tests (both linked in the 2nd paragraph of this article) was three rapid shots for each FH capturing the peak brightness in lux and leaving the camera shutter open that whole time to average/compile all those shots into a single image. Ive read all the flash and comp ones. Will you be doing this test for Shotguns (muzzle breaks), Like how your tests keep the human factor out the the muzzle break tests. ODIN Works 5.56 Atlas Compensator The ATLAS is muzzle device that features a 3-piece modular design that makes installation simple and fast. I used to be that macho idiot who could take severe noise. The end result? Tyler and I actually discuss this topic on his podcast that will be publishing on TTAG here this evening. and shooting an AR without ear protection isnt gutsy, its stupid. Round ports at a ~45 angle to the round bore makes for an interesting internal shape where port and bore meet to create baffle, and it certainly seems to work. Its also how its applied could be a very quick, sharp impulse and could be more of a push over time. On top of working great, the Atlas Blast Shield has a stylish, modern looking design. New price $160 Cobalt Kinetics EVOLVE Pro Comp MSRP:$99. Flash and recoil testing of this would be appreciated in future brake shootouts. I do not foresee a muzzle brake test where I focus on suppressor-accepting brakes. MSRP:$79. The impact that a muzzle brake can have on your AR is hard to overstate. I just want to mention that the Venom Defense 3 chamber Comp is like $22-29 on their website right now So, that recoil reduction to price chart got even better. Jeremy, great information and I liked that you did start mentioning about the side blast from some of these compensators. Good for being nice to neighbors on the range. Finish:black oxide (as tested) or AlTiN what happened to westballz; lake serene death; shenzhen xinadda tv mount xd2285 instructions; luling, tx car accident; mike prangley leaving; mohamed lahyani languages If I did it with 5 different shooters wed get 5 different results. Even off a bipod taking precision shots at a few hundred yards, when the crosshair doesnt leave the target you can drill the snot out of the thing while seeing your own hits rather than fire then spend two seconds trying to find the target in your zoomed-in scope picture again. We have actually gone to a true free recoil testing method(hanging the rifle parallel) that while not perfect, gives a better comparison. MSRP:$133. No Change Phase 5 FATman Hex Brake Lets start our discussion of muzzle devices with the venerable flash hider. Above comment was directed at the closet liberal Dyspeptic Gunsmith. LANTAC 5.56 Dragon Dead Air KEYMO Wolfman Muzzle Brake. Ill see if I can do your test, though, at some point. Weight:2.89 oz Diameter(at largest point): 0.829 Length:2.106 MSRP:$67. Tiger Rock A2 Stainless Steel Muzzle Brake / Flash Hider, Fortis Control w/ Black Muzzle Brake Bundle Pack. Finish:black nitride Hard to argue with that if the RACs looks are to your liking. Another setup I am considering is a dedicated flash suppressor with compensation like like the Surefire Warcomp and deal with recoil through other means. Seems to be you have an issue with free speech, son. In this test, we find that it reduces recoil by almost 50%. Recoil reduction was truly excellent at 68.2%, making it more of a brake than I was anticipating (with the blast and concussion to match). It acts as a QD mount for KAC's 5.56 suppressor line, and is a combination brake / comp / and flash hider. Click here to jump to its point in the video. Length:2.595 As an engineer I know that theory, no matter how seemingly airtight, sometimes does not stand against empirical results. Its still good for a 74% reduction in recoil, which is absolutely amazing, but the SJC Titan did a whopping 78%. If a #4 is done Id be interested to see how they perform. MSRP:$149. Id expect the percentage reduction numbers to change a bit but the muzzle devices to rank the same way compared to each other. At best I think downwards force needs to be tunable, because an experienced shooter with a stable shooting position who doesnt allow the rifle to roll up their shoulder or to push their torso back will shoot much better with a neutral muzzle device than one that pushes the muzzle down on each shot. would be interested in seeing the results of some brakes that have a shield, like the Surefire Warden, will it increase the recoil? Thank you so much for doing these test. Rise Armament RA-701 Compensator This 416 stainless steel, black nitride finished compensator is designed to counteract recoil and lifting tendencies and helps you stay on target for fast follow-up shots. MSRP:$28.99. The WarHog provides purely straight-line recoil reduction for those that prefer neutral set ups. Faxon slim 3-port muzzlebrake Strike Industries JCOMP Gen2 Like the King Comp, this could be considered a hybrid due to its two chamber design that helps with recoil management. For the budget-conscious builder who is just putting together a simple AR build, an inexpensive but functional muzzle device like a flash hider certainly fits the bill. After the initial round of testing I took another trip to the woods and did back-to-back testing with three types of ammo and different recoil sled weights, and the Titan always beat out the M4-72 (video of that starts here). Lancer Nitrous AR-15 Compensator .223/5.56 1/2-28. New link https://www.brownells.com/rifle-parts/muzzle-devices/compensators-amp-muzzle-brakes/ar-15-m4-72-severe-duty-compensator-dlc-22-caliber-prod58033.aspx?avad=avant&aid=170901&cm_mmc=affiliate-_-Itwine-_-Avantlink-_-Custom+Link&utm_medium=affiliate&utm_source=Avantlink&utm_content=NA&utm_campaign=Itwine On the competitive side of the fence, we now see muzzle brakes which can act as compensators. For many, it might even be wise to start with the flash hider, and then if you find the recoil impulse of your AR-15 is too much, then consider upgrading to a different muzzle device. The perception of which recoils more will be different, and its also subjective where some people might prefer one over the other or swear that one is weaker/stronger than the other, despite the possibility that in both instances the exact same amount of energy was transferred to the shooter. SureFire says its the worlds most shootable flash hider, which is obviously a hard claim to put to the test, but then again it reduced recoil by nearly 36% the most of any flash hider Ive tested for recoil, I do believe. I also prefer completely neutral brakes like your brakes, which I mentioned in various places in this article, as muzzle rise isnt an inherent feature of the AR but is due to the shooter to varying degrees. northern state university softball roster. And chose the threaded Griffin Armament Flash comp. It also evacuates a portion of the gas out of the top to reduce muzzle rise. For an aggressive, but not quite howitzer-like look, and for staying within size restrictions for some competition classes (although I believe in the U.S. its 1.0 thats used as a limit in some classes, meaning this one would technically be too big at 1.02), Nord Arms makes their Standard brake. Of course, with the end cap welded onto it, there could be more going on inside than meets the eye. AR-15 Muzzle Brake Shootout #3 - The Truth About Guns MSRP:not sold separately. Most people infected with the COVID-19 virus will experience mild to moderate respiratory illness and recover without requiring special treatment. Except as a gag gift (I suggest including a TAC-SAC with it, plus a waiver of liability), please, please stay far away from this thing. For most casual shooters who are plinking 5.56 out of an AR, a compensator should not be absolutely necessary. Great information, thank you. Im not saying thats how you should proceed, but thats definitely how most gun owners in CA proceed. Now, CA law defines flash suppressor as: (r) Flash suppressor means any device attached to the end of the barrel, that is designed, intended, or functions to perceptibly reduce or redirect muzzle flash from the shooters field of vision. Length:2.25 Our return policy is simple, if youre not 100% satisfied with your purchase send it back within 30 days for a no-questions-asked refund. But the actual design of the baffles is identical and, therefore, their performance in recoil reduction is identical. As such, the folks next to you at the range might shoot slightly less dirty looks your way. MSRP:$59.99. http://www.nydailynews.com/news/crime/firing-ar-15-horrifying-dangerous-loud-article-1.2673201. 1) train to shoot from a more stable position/stance so the torso doesnt get leaned back from recoil 2) hold the gun in a better location in the shoulder pocket or even over towards the pec lower so the bore line (buffer tube line) is against the body instead of floating in air and 3) reduce rearwards recoil push, as its whats actually causing the shooter to create muzzle rise from a gun that doesnt inherently exhibit any. Diameter(at largest point): 1.198 VG6 DELTA VG6 designed this flash hider as an alternative to the standard A2. This is another brake with no wrench flats, but Lilja sells a tool for torquing it down via one of the ports. Length:2.736 The sniff test is basically 1) is there any mention of flash reduction in the company materials and 2) does it clearly have recoil-reducing design features. AR-15 Muzzle Brakes, AR-15 Flash Hiders & AR-15 Compensators First off I have a question for Jeremy, who makes the handguard youhave on the AR in the video, i am building a hex themed AR and so far that is the best looking handguard I have seen and would love to know where i can pick one up. You FUDS are no better than the control freak liberals who are constantly demanding what people should or should not own, what size magazines they only need, or how no one needs machine gun or black rifle Hopefully soon it will be your disgusting type who will no longer be welcome at our firearm ranges. rosie rivera house address 4123; kal magnesium glycinate arsenic; is captain jacks deadbug safe; doctors accepting new patients whitby Finish:black FWIW I think its fair to say that 13 of the 20 brakes that reduced recoil in this test by more than the Kahntrol brake have either no design feature whatsoever or have only very limited design features creating downwards force. 4.7 (22) LAMBDA PRS65 PRECISION MUZZLE BRAKE 6.5. Maybe if youve had rotator cuff surgery, or youre shooting a full-auto rifle. A rifle that fits the shooter makes recoil (and overall handling) so much easier on the shooter. Machining and finish are awesome, and the look sets it apart. Bad things often happen at night, and preserving your vision in a life-threatening situation is absolutely vital. Weight:1.118oz core15 muzzle brakenaeyc teacher evaluation formsnaeyc teacher evaluation forms Diameter(at largest point): 1.0 Just wondering of you still feel like the AFAB is still the all-around king. For the most part, they match the performance of a bulkier design, without the added weight and length. And that isnt just eliminating the downwards force, its turning it into upwards force and essentially doubling the effect. New suggestions This creates very soft low energy recoil that allows for absolute control. No Change Tactical Advantage Armory NT-23 Titanium Muzzle Brake Considering the low concussion, decent recoil reduction, and quality machining and finish, its a good choice with or without a suppressor attached. The handguard is an O2 Lite from ODIN Works. Diameter(at largest point): 0.875 Finish:black hard anodized core15 muzzle brake - marconasedkin.de Well the A2 is a flash hider, as you stated. Plus, youre not limited to just paper targets. The important stat is the recoil reduction as a percentage, which has proven pleasingly consistent.. Diameter(at largest point): 0.866 Any chance of adding the OSS STS muzzle brake and the newer OSS QD brake to the mix? TBAC 223CB Muzzle Brake. Weight:5.573oz (as tested in copper), 0.95 oz in titanium, 1.7 oz in steel Do you see any erosion on this copper brake? Reducing recoil by 72.65% was good enough for a fourth place finish (really, it was effectively in a tie for third). Additionally, all of the raw data can be downloaded in an Excel doc by clicking here. Weight:2.337 oz If youve always wanted a V12 on your rifle, look no further. Material: steel (high strength corrosion resistant alloy) Its a little more than a thread protector, but it aint a silencer all the blast goes forward. In many cases these companies offer two versions of their brakes one with suppressor mount capability and one without. There are typically many finish options to choose from, too. Worth considering if thats the brand of muzzle brake you have selected and you want to reduce concussion on your build. Is there other compensating flash supressors you recommend? As simple and as redneck as this test looks and is, sure the average difference between the shortest slide and the farthest slide across all 44, 2-shot tests was 0.1477. Still good Black Dawn Muzzle Brake Id want to know more (time for more research on our part) about chamber pressures and the associated potential bore pressure at cork pop as the projectile breaks the muzzle plane for any given caliber/barrel length (for example, 5.56 M855 has a chamber pressure approaching 58,000 psi, and a bore pressure at the pop of the cork at 16,000 psi for a 7.5 barrel, 11,000 psi for a 10.5 barrel, and 7,500 psi at 16) If Im planning on a day of shooting, I just drive up to the mountains and shoot in peace. Im going to get either the Indian Creek BFD or one similar to it for half the price (made by Presma) to mainly reduce the recoil which I felt in my hands after firing 60 rounds more so than anywhere else on my body. Devices that slam the muzzle down drive me crazy. Or even a 7mm using 160+ grain pills. Dead/ Bad Links SJC Titan Compensator Then I stood by my buddy at the range while he shot his braked .308, and I came to the conclusion that using such a device at a range with other people in close proximity is just inconsiderate. Fortis Red Nitride Muzzle Brake Similar to the standard Fortis muzzle brake above, but with a slightly different look. For the uninitiated, there are three main types of muzzle devices: flash suppressors/flash hiders, compensators, and muzzle brakes. I have read all of the tests and I appreciate all the great information as I like to read a lot before making any purchases for my rifles. Jeremy. Thank you for doing these tests, very illuminating. So unless you expected me to have hopped in my DeLorean and hit 86 mph and shot into the future to pick up a couple Paladins only to go back into the past to include them in this 2-year-old test perhaps you could slow your roll. Yeah, those VG6 brakes are super nice in every way. Length:4.03 Also, how heavy is your AR-15 and how heavy is the sliding rig? Length:1.752 Weight:2.66 oz It doesnt hurt that its very cool looking without going overboard. Id love to see them offer this brake in a simpler, lighter, less-expensive version sans the suppressor mounting elements, and Im sure it would sell like crazy. Diameter(at largest point): 0.866 Strike Industries WarHog Comp Unlike the pair of two-chamber Strike Industries compensators above, this one is a simple and very affordable single chamber muzzle device. Length:2.503 This one being one of the worst offenders: http://www.thetruthaboutguns.com/2015/04/jeremy-s/gear-review-juggernaut-tactical-juggerbrake/. In this test against tough competitors it ended up middle-of-the-road, but over 60% recoil reduction is nothing to sneeze at. Diameter(at largest point): 0.866 74.03%. Finish:Cerakote (or similar) ALL RIGHTS RESERVED. Without further ado, our recoil reduction winner isdrum roll please. MSRP:$59.95. You just choose where, when and what hurts. Timing and tuning is done with the titanium sleeve, so no shims or crush washers are needed. The guys who make me shake my head the most are (eg) the guys who want a .300 WM in a 6 pound rifle, and they want to hurl 180 grain pills downrange. I suppose a strap wrench would be the way to install this guy as, again, there are no wrench flats but also really no other appropriate feature to exploit for torquing purposes (I may have shoved the shaft of a screwdriver in the muzzle teeth). MSRP:$450 (not in production). That thing is the loudest and brightest compensator Ive ever seen. But if you remove the rearwards recoil, no shooter will show any muzzle rise itll just sit there totally steady. 2) Enable the gas piston for a couple of tested muzzle brakes to see how much the gas loss to the piston system affects recoil. Hey man, love your tests, been great info! The large port presents a broad surface for gasses to impact against, which keeps the muzzle down and the sights on target. These tests are expensive, but Id love to do more. To attempt to do perfect Id be spending like 10 grand hahaand I think wed end up seeing these brakes perform and rank (ranking compared to each other) so very close to whats in these tests that it wouldnt even almost be worth the time or money. In most muzzle devices that vent more gas/pressure upwards than downwards in order to effect a downwards force on the muzzle, itll be too much force for some shooters and too little for others. Then it comes right off again for when you want that recoil and muzzle movement reduction. 72.93%. There is nothing mechanical about the function of the firearm that causes the muzzle to go up. The Precision Armament M4-72 was king of the recoil reduction hill against 138 other 5.56 competitors and 23, .30 cal competitors, but it just got Joffreyd by the SJC Titan. [EDIT: Tactical Advantage Armory informed me that I received units that are functionally identical (exact same port design) to their production units, but were either late-stage pre-production prototypes or blem versions made while they were refining the CNC machine code. This one was made while they were refining the CNC code]. Finish:Mil-spec black parkerized 101 Warfighter Way Black Creek, GA 31308 1-866-554-GUNS. This will determine if the weight of the muzzle brake is one of the factors in the effectiveness of one at reducing recoil. Theyve had great success with this design, and its one wed definitely consider for a build that we felt needed a compensator. core15 muzzle brake MSRP:$75. NBS Three Port Muzzle Brake This is another affordable brake from NBS that will greatly reduce recoil and muzzle rise on your AR. Length:2.304 1.3K views, 25 likes, 0 loves, 5 comments, 2 shares, Facebook Watch Videos from Core Rifle Systems: The CORE Muzzle Brake. Voc jogar com segurana fazendo um cash out antecipadamente, ou voc um jogador que quer correr riscos e atingir esses altos multiplicadores? Finish:black matte QPQ nitriding (dark grey matte thick carburizing in titanium) This has to do with the downward thrust applying excess pressure to the sled causing greater friction, and in real world testing, the top ported brakes have terrible impact spacing during double tap drills. Full auto, whatever, the muzzle wont rise. I have not found myself surprised by my real-word perception of felt recoil not aligning with results of the sled testing. Length:2.406 For many newer builders, a flash hider is what first comes to mind when they think of a muzzle device. And yeah, sure, they also look cool, sound cool, and throw fire, all of which are fun as long as youre the one behind the gun and not on the range next to it haha. It combines perfect machining and finish with cool, modern aesthetics, unbelievably light weight, and solid performance (64.36% reduction). Hey Jeremy, interesting series. Venom Defense & Design AR-10, 2-Port Compensator: Venom Defense is a bit of an Instagram celebrity (page here), especially among the machinist porn crowd. That said, there are also muzzle devices that do not fit into these categories. However, its not something wed ever just toss on the front of our firearm without thought. The procedure for this test was the same as the previous braketests. Again, I tell them Thats going to hurt. In this case, a little more mass is a Good Thing. Diameter(at largest point): 0.866 Faster follow-up shots when hunting? I had strapped it down for the flash hiding tests so maybe I had that on the mind. If you dont like noise or concussion blast, go play golf! this one feels like it kicks a bit more than this one) from normal shooting. I wasnt expecting a lot of recoil-reducing performance, but cutting it by over 55% aint too shabby. Put any muzzle device on that compensates for muzzle rise, though, and the muzzle will shoot downwards. Ive been very excited to recoil test this flash hiding compensator since it nearly won Flash Hiding Test #2, despite nottechnically being just a flash hider. Jeremy is TTAG's Deputy Editor, working mostly behind the scenes but, when he attempts to write, he focuses on comprehensive gun & gear reviews. Dead/ Bad Links Nord Arms Open Brake My loaner sample was well used and abused, but its clear that it was machined with great precision and deburred and smoothed out afterwards. Once again, I stress that if opportunity presents itself, try before you buy. The recoil from a 5.56 is quite mild. core15 muzzle brake - edrobd.org Finish:machined stainless (as tested) or Cerakoted (in Ti, Cerakote or flame anodized) Mass is a legitimate way to reduce recoil and it absolutely is a factor. Personally Im looking mainly for reduced muzzle rise reduced recoil is just a benefit. Sheesh, what a concussion/particle throwing beast! I guess, maybe. I have observed this variability across a variety of rifle makes and models. The big, wide brakes with huge normal area (esp. Save my name, email, and website in this browser for the next time I comment. New price $87 Precision Armament M4-72 Severe-Duty Compensator Most people these days have never even shot an AR with the A2 .? After switching to the .223 caliber end cap, recoil reduction jumped to 49.45%. Also, far too many people obsess over getting the lightest possible rifle, not seeming to understand that Isaac Newton wasnt just making suggestions in his three laws. It would suggest that all of the immense testing you already did might be inconclusive and possibly reopen the issue. Material: stainless steel Q when will you attempt to do another test since there are many new brakes are in the market after your last video on the subject in 2016. Tactical Advantage Armory NT-23 Titanium Muzzle Brake: The NT-23 is more than 4 inches of fish scale-lookin shark teeth with ports everywhere. With its high-grade steel construction, it reduces flash signature, muzzle rise and has a lifetime warranty. Dead/ Bad Links Knights Armament Triple Tap Flash Suppressor/Compensator An obvious advantage to muzzle brakes is their ability to reduce recoil and allow you to fire shots in succession with greater control. By focusing the gas out the front its giving you that rearwards push right back, with some small recoil reduction due to the gas cooling and pressure drop depending on the volume of the blast shield. Finish:blackmatte QPQ nitriding (dark grey matte thick carburizing in titanium) Jeremy, For Hannibal actually Im pretty sure we ended up losing muzzle brakes on appeal. They look cool, but the blast is just. Fortis Control w/ Black Muzzle Brake Bundle Pack The Fortis Control Shield was designed to push the noise forward for combative situations or even for simple range use, while the top ports keep the muzzle device flat on target. Ive installed a few of those brakes/comps with strong downwards muzzle force upside-down to test how it affects the results, and its minimal. The Dirty Bird .30 5/8-24 A2 Birdcage Flash Hider is the classic A2 flash hider design but refined in key areas. Sporting a proven design, these brakes redirect most of the gasses out to the side ports for reduced felt recoil. Finish:black Material: 4140 steel I understand what youre trying to figure out, but at the same time its a purely academic question. You may also be interested in the AR-15 Drop-In Trigger Roundup here. Also, note that we are not covering suppressors here, which in a perfect world, are perhaps the ideal muzzle device if you have the ability to legally attain. A muzzle brake made from Inconel. I didnt realize I didnt test it! MSRP:$235.99. Maybe in the future you could do a battle of the cheapos, $50 or less, if someone else hasnt already. Apparently they dont realize that the height of this rail is way lower than AR rail height, and it would be basically impossible to jury rig a sight onto this thing at a usable height. Length:2.601 The noise, muzzle flash, and concussion were so obnoxious that every time he shot I flinched. A2 was included in the 1st and 2nd muzzle brake test, and I didnt do it again here. A2 was also in both flash hiding tests already (and I dont think there will be a third), as was the VooDoo Innovations Manimal, which is an extended-length A2 just like what youre talking about. My AR-15 was strapped to the test rig, which was free to slide on a plastic table. They make it in both. Now Im not. Machining is pretty dang clean, but as you can tell my loaner from Lisa Marie AKA Lady 3 Gun is very, very used. You ARE correct in that sled results arent a perfect approximation of shoulder results for multiple reasons, but saying sled results do not equate to shoulder results is definitely an exaggeration. @Dyspeptic- Put me down for a signed copy of the book, Im a believer, and agree 100%. Light tool marks on the circumference, a couple nicks on the 90 edges, and one or two really small points where finish is missing. A flash hider works by rapidly cooling and then dispersing expelled gas, or redirecting the gases that exit the muzzle upon firing. In the case of this test, two shots were fired with each brake while on the test rig (some were fired outside of the testing) and a handful of them appeared in the FH testing, too. Ill probably do a linear comp/BFD when I build my AR-10 lower out. Read ALL of these tests repeatedly. The Multi-Axis Muzzle Stability (MAMS) brake from Knights Armament may cost an arm and a leg, but its also extremely expensive.