Feature

· 30mm Diameter

· Three Height: Low, Medium and High

· For 11mm 3/8" Dovetail Rail

· Anti- Full Metal

Specification

· Overall Length:21mm(0.83 inch)

· Ring Diameter:30mm

· Material:6061-T6 aluminum alloy

· Finish:Black Matte

· Fittings:hex key

· With removable threaded recoil stop-pin

· Light weight in precision

· Easy and quick installation

· Fit most 11mm 3/8" dovetail rail air gun or hunting rifle

· Shock tested by real firearms