The ISMS (Ideal Scope Mount System) is an extremely sturdy scope mount, with the possibility to attach multiple optical accessories directly to the mount. Built-in scope level and 45-degree split of the rings provides unobstructed view of your optics knobs. The durable design of the mounts prevents damage to the scope due to flexing during heavy recoil. The rings are grooved on the inside for better grip and the mount base is milled from a single billet of aluminum. Features direct mounting to TRG integral scope rails. Will fit the Tikka T3x without modifications. Older style T3's may require slight modifications to the ejection port (opening it approx. 1/10" downwards). M Mfg: Spuhr