Griffin Armament QD Blast Shield

May 4, 2017 | 0 comments

Muzzle devices have as much flavor as any other accessory for the AR family of rifles and with good reason. With muzzle velocities in the sub 2500 to near 3000 FPS range depending on barrel length, there is a great deal of concussive pressure leaving the barrel with each round and that force has been turned into a tool to help control recoil for decades by carefully designed muzzle devices.
On the 16” barrel, pressure often exceeds 8000 PSI, jumping into the 11000 PSI range when you get down to a 10.5” barrel and the popular 7.5” …read more