Alpha Scope Ring 34mm Aluminum Sig Tactical Complete Set Black by Sig Sauer Product Overview now offers the Sig Sauer Alpha Scope Ring 34mm Aluminum Sig Tactical Complete Set in black. These Tactical scope rings are constructed of the highest quality 6061T6 aluminum to ensure light weight and long lasting durability. The cantilever rise of the mounts is engineered to match your eye position on a rail equipped AR style firearm. The mounts are hard coat anodized to resist corrosion and protect them from scratches. Specifications and Features: 6061 Aluminum Cantilever Design Picatinny/Weaver Rail Anodized Black in Color