In Particular, Axial Tension, I might add Concentric Axial tension, Tension should be your friend as it pulls the mount into a perfect mating with the barrel shoulder, if you're tightening enough to distort the barrel/muzzle crown, you're way past where you want to be. Of course the stress on the muzzle threads is all axial, so none of these have much effect on accuracy. There are two things that have to be maintained, the mating of to threads "cones" ensures the centerlines of the pitch diameters are coincident, of course you cannot have the threads pull tension without abutting either the front or rear ends, the faces of which have to be perpendicular to the centerlines, or it will be pulled off parallel.Įither way, a zero torque set-up will have to be very careful on how they plane to hole the two parts in-line while the glue sets up. Yes, I forgot to mention the perpendicular mating surfaces. That's why you should NEVER use a crush washer for a suppressor mount you can't be assured of proper concentric indexing off the shoulder as one side may deform a wee bit more than the other. Torque forces the ass-end of the mount to correctly index off the shoulder. It has a lot to do with the combination of what you call thread tension and indexing off the shoulder on the barrel. And in that case, you'll be risking baffle strikes due to a poorly secured suppressor.Ģ) IF you are truly going for "zero-torque", how are you planning to keep all the centerlines coincident? The tension on the threads is what normally does this. I do not think you'll see any difference in accuracy between the two conditions.īut again, there's absolutely no way to get a suppressor mount to work with "zero torque" unless you leave the mount stuck in the can all the time. Then take the thing off and repeat the accuracy test, again doing your absolute best with your shooting. See what kind of accuracy you get with it that way, trying your damnedest to wring every bit of precision out of your shooting. Since there's no way you could damage your barrel by trying the brake with torque first, try putting it on according to the SilencerCo instruction videos (on their site). But a steel muzzle device on a steel barrel will simply cam the two parts' threads against each other and not stretch anything. Increasing torque on the barrel nut stretches the upper receiver - this provides clamping force on the barrel's flange - which could cause issues with uneven upper faces or irregular barrel flanges or both. I just don't see how 30 foot pounds in-line with the barrel's axis is going to have any measurable effect on accuracy in the short term, the long term, or with or without the can. I don't see ANY problem with making your upper and barrel fit together as perfectly as possible. If you aren't familiar (or don't agree with lapping/bedding/etc) with these techniques please refrain from making non-helpful comments. Question: What went wrong? Do you have to apply a certain amount of torque to make Rocksett work? Long story short the Rocksett did not hold. Today and was installing the suppressor and I noticed the mount turned a little, and then completely unscrewed when I removed the suppressor. I put it in a small oven (shop use only) at about 175 degrees for at least 15 minutes, as recommended on the packaging. I cleaned the barrel threads and brake threads and liberally applied Rocksett. My problem: I used Rocksett to glue the SilencerCo ASR brake (suppressor mount) in place. The theory is that the less torque is used the less the end of the barrel is under stress and deformation. My last step was to install the muzzle device using the "zero-torque" technique. Steps like lapping the upper, bedding the barrel, gas block, and tube, tweaking the gas tube, etc. See the size chart below to find the correct ASR Mount for your silencer.So I have a 6.5 Grendel upper that I am putting together using techniques that are commonly used to get the most in terms of accuracy. Each ASR muzzle brake comes with a shim set and rocksett for easy application. It’s also compatible with the Hybrid 46, Harvester Series, Octane Series, and Omega K Series. In an effort to help keep the cost of added accessories to a minimum, the ASR mounting system comes standard with the Omega 300, Chimera 300, Hybrid 46M, Omega 36M and Saker ASR series suppressors. This three-port muzzle brake is compatible with all SilencerCo ASR Mounts and with multiple thread and caliber options and is designed to allow for quick and easy one-handed attachment and detachment, while the three-port design greatly reduces felt recoil and muzzle climb when being used without a suppressor. When you want to be able to easily switch between suppressed and unsuppressed shooting while still reaping the benefits of reduced felt recoil and muzzle climb offered by a muzzle brake, the SilencerCo ASR Muzzle Brake is the perfect solution.
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