The Bullseye ZR Mount compensates for nearly 100% of the felt recoil to the scope and is 100% repetitive for maximum accuracy. With the Diana Bullseye ZR Mount, even low budget scopes may be used on high power air rifles. With an integrated 0.04” droop compensation and lock-down recoil stopping pin, this mount is ideal for a recoiling break-barrel airgun. Designed to be extremely rigid with ample holding power the ZR Mount is suitable for almost every available air rifle with an 11mm mounting rail.