Our OTB (over the barrel) muzzle devices interface with our OTB Silencers, The RSTA and SPR. This two-piece, welded design will be sure to impress your friends. Automated welds provide aesthetically pleasing and rugged design and functional characteristics. The Paladin R muzzle brake is integrated into this modern twist on a Griffin classic. "R" implies the reverse braking motion that kills recoil and keeps your shots on target. Enjoy.