Our .300 AAC Blackout Linear Compensator Muzzle Brake is perfect for your AR pistol or AR15 or any other SBR short barrel rifle build threaded in 5/8-24 TPI. The 6 linear ports on this compensator blast all gas and pressure and concussion downrange so you don’t annoy your neighbor at the range or hurt your ear drums. As always, ear protection is recommended nonetheless! Precision machined from carbon steel and finished off in a smooth finish and surface treated in black nitride, this Linear Compensator Muzzle Brake will look great on your .300 AAC Blackout SBR rifle or AR15 Carbine. Please ensure your barrel is threaded 5/8-24 thread pitch. All our muzzle brakes include a free crush washer for timing your muzzle brake to your rifle.