A3 Industries Duo Picatinny Mount Front Hand Stops 7075 Aluminum Black. Machined from 7075 aluminum the minimalist design is extremely lightweight and durable with smooth edges and rounded corners to reduce the risk of snagging. The DUO is ergonomicly designed to work with different hand sizes providing better control to improve the accuracy versatility and functionality of your weapon. Available in both M-LOK and Picatinny (1913) mounting platforms the DUO is CNC machined from 7075 aluminum and MIL-A-8625 Type III hard coat anodized. Specifications for A3 Industries Duo Front Hand Stops: Manufacturer: A3 Industries Color: Black Fabric/Material: T6 Aluminum Length: 1.625 in Width: 0.625 in Height: 1.25 in Material: Aluminum Gun Type: Carbine Finish: MIL-A-8625 Type III Hard Coat Anodized Weight: 0.8 oz Features of A3 Industries Duo Front Hand Stops Lightweight machined aluminum Hard-coat anodized mounts over 3 Picatinny slots/one M-LOK slot smooth snag-free design forward angle provides more hand room on short hand guards Package Contents: A3 Industries Duo Front Hand Stops A3 Industries HS-010: Duo Picatinny Mount Front Hand Stops 7075 Aluminum Black