However, the ball cap that I took off and set down next to the rifle as I lined up the sights ended up about 20' away behind me diagonally, because although those gases were efficiently channeled through the brake, they still have to expand-and did so at a high rate and with great velocity. I was expecting (looking forward to?) for this thing to leave a nasty bruise on my shoulder, but due to the absofuckinglutely incredible design of the brake, the recoil was similar to a. The very best example of this that I have ever personally felt was on an AR50A-1. Some devices will also push the force forward, somewhat nullifying the "kick" of the gun. Again, this will impart a slight counter twist while forcing the muzzle down. The standard Russian '74 brake performs a similar function, an asymmetrical porting system in the expansion chamber, along with a general wedge shape to the main venting area. Specifically, this forces the muzzle down, along with a slight counter-twist. If you look at the J-Tac device, you will see that it is not symmetrical, and that it is intended to force the gases to go in specific directions, which directly effect the way the recoil is felt. There are other types and designs of muzzle brakes, obviously, and they typically serve a similar function. This is fairly effective, and I have not heard of adverse effects on accuracy when properly threaded and installed. The cut of this particular brake is such that there is a bit sticking out on the lower left of the barrel, with the intent of pushing the muzzle down and to the left to counter the natural direction of force. Normally, for a right-handed shooter, the gun will recoil up and to the right. The slant cut itself is asymmetrical, causing the direction of recoil to be effected. With the slant brake the idea is to not be symmetrical. You are correct, sort of, but I think you are thinking of the crown. I thought part of suppressor design was how to bleed off hot gas symmetrically while keeping the bullet from beginning to tumble, especially before it left the suppressor? no muzzle device should negatively effect accuracy.
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