The DeathGrip UltraLite is perfect for sporter rifles and even quad-rail modern sporting rifles. The DeathGrip UltraLite mounts to any Arca-Swiss Tripod Head with the included adapter. The Arca-Swiss adapter can be removed exposing 1/4"-20 or 3/8"-16 threaded holes for mounting your own Tripod Head plate or simply threading onto a Tripod Center Post. Its patented clamp securely locks down any weapon for a hands-free, rock-solid rest, freeing the BOG hunter to glass or call on the hunt with ease. Mfg: Bog Gear