Tps Arms M6 Mid Length Scope Mount 1-piece Aluminum. It is designed for red dot optics. The kit includes the picatinny style mid-length scope mount and two mounting screws. This replaces the rear sight on the rifle. Material is 4140 steel. Length is 2.213in. Specifications for Tps Arms M6 Mid Length Scope Mount 1-piece Aluminum: Manufacturer: TPS Arms Gun Rail: Picatinny Fabric/Material: Aluminum Color: Black Length: 6.55 in Dimensions: 0.45 X 4.05 X 6.55 in Ring Type: Weaver Style Finish: Matte Package Contents: Tps Arms M6 Mid Length Scope Mount 1-piece Aluminum