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. – Length: 4.15 – Material: 17-4 PH SS – Weight: 4.2 ounces – Attachment: 1/2×28 or 5/8×24 threads – Finish: Black Oxide – Free of wear prone geometry – 17-4 PH stainless to withstand hard use – Lustrous black oxide finish – Griffin Laser Logo Marked – Industry Standard thread pitches – Shim set Included – Compatible with SPR and RSTA Silencers