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 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