The CompTek Type I Compensator/Muzzle Brakes is designed for use with
.223/5.56 mm ammunition ONLY and will install on firearms with 1/2-28
barrel threads. DO NOT USE WITH LARGER CALIBER ROUNDS. They feature a
two chambered brake with an internal gas expansion chamber and 5 top
ports to eliminate muzzle rise. This combination virtually eliminates
muzzle rise and felt recoil. This brake is machined from 17-4 Stainless Steel and has a machined finish. Product is shipped
with installation instructions and an Armageddon crush washer with
matching finish to correctly position the device.