The Mesa Tactical barrel clamp provides a mounting point for picatinny rails, weapon lights, and sling attachement points near the muzzle of your shotgun. Constructed of durable 6061-T6 aluminum and finished in matte black with type 3 hardcoat anodizing. The threaded portions of the clamp feature HeliCoil steel thread inserts for long thread life. A 2" picatinny rail section is included with the clamp. The Barrel clamp will accept the sling mounts and accessories designed to work with the Mesa Tube Stock Adaptors.