Mizugiwa 1inch /30mm Quick Release Cantilever Weaver Forward Reach Dual Ring Rifle Scope Mount Fits 20mm Picatinny Weaver rails Comes with 25.4mm reducer inserts so you can use this with 30mm and 25 mm (1 inch) body tube rifle scopes. Built in Weaver style rails - very handy fitting flashlights and lasers etc. Front Lens Size: Up to 56mm - This figure describes the maximum size of the objective (front) lens. Scope Mount with Qick Detach Locks for Picatinny Weaver Rail