NcDe Tactical Barrel Clamp Mount With Rail For 12 Gauge Shotguns And Magazine Tubes Fits Remington 870 1100 11-87 SP-10 Mossberg 500 835 Maverick 88Winchetser 1300 High strength aircraft aluminum alloy with Anodized Black Matte Finish. The solid hollow structure design utility model has simple and compact whole structure which conforms to principle of mechanics, solidly. Attach tactical flashlights or laser scope sights,and other different accessories. Lightweight, mounts light or laser scope sight, securely Package Included: 1x NcDe Tactical Barrel Mount, 1x Hex wrench