Weight: 7.3 oz./Lenght: 6.75" Material: Hard coat anodized 6061 aluminum melonite coated steel Easy To Install; Simple and Quick To Remove Or Install. Picatinny Weaver t-marked for location Attaches to with built-in receiver mount interface Hard coat anodized 6061 aluminum construction Features an auto lock System for no tool adjustment and repeat zero locking. Premium, Solid, Durable Aluminium and high pressure steel; Black Matte Anodizing Finish, Sturdy, Lightweight Construction, High Quality, Sturdy Construction, Build No Wobble, Offer Durable Safe, Mainly designed for Airsoft