BATTLECLAMP MODEL: STBC The Sage Tactical Barrel Clamp secures magazine extension tube kits and allows numerous accessories to be mounted easily and quickly. Accepts most 1" diameter weapon lights or lasers. The STBC is reversible and features a single point button sling cup and a 1.5" MIL-STD 1913 Picatinny rail for mounting additional accessories. Blackened stainless steel allen head screws bring the clamp halves together. Fits Remington 870, 1100, 11-87 and Benelli M1, M2, M4, M1014, 12 gauge shotguns. CNC Machined from 6061 T6 aluminum Mil-spec Type 3 hardcoat anodized - matte black finish. Length - 1.5" (3.8cm) Width - 1.4" (3.6cm) Height - 1.875" (4.7cm) Made in the U.S.A.