Mesa Tactical Magazine and Barrel Clamps provide mount points for Picatinny rails, weapon lights and sling attachments near the muzzle of a tactical shotgun. Both designs are CNC machined 6061-T6 aluminum, Type III anodized to military specifications. Threaded attachment points feature HeliCoil steel thread inserts for long thread life, even after repeated mounting and removal of accessories. The Mesa Tactical Magazine Clamp can be used to more securely retain aftermarket or factory magazine extensions, while at the same time offering flexible accessory mounting options near the shotgun muzzle. Some magazine clamps include a push-button quick release sling swivel, and clamps are also available with a 2 inch MIL-STD-1913 Picatinny rail that can accept standard weapon light mounts. The magazine clamp can also be used to mount one inch diameter weapon lights simply by clamping one side to the shotgun barrel and the other side to the light body. Our Barrel Clamp offers an accessory mount point for shotguns that don't have extended magazines. Its unique clamping mechanism ensures a secure fit even under recoil. Mesa Tactical Magazine and Barrel Clamps can accept accessories made for Mesa Tactical Telescoping Adapters, including Mesa Tactical Adapter Mount Rails and Mesa Tactical Adapter Mount Sling Attachments.