GRG .308 Model 15 Machined Matte Steel 6 Prong Impact Defense Shark Break Brake Muzzle Device with Crush Washer for 5/8 X 24 TPI Thread Pattern for .308
.308 Model 15 Machined Matte Steel 6 Prong Impact Defense Shark Break Brake Muzzle Device with Crush Washer for 5/8 X 24 TPI Thread Pattern for .308