Mesa Tactical Magazine Clamp w/ Rail for Remington 12-GA Black. PRODUCT OVERVIEW The 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. All Magazine clamps are available with a push-button quick release sling swivel or a two inch MIL-STD-1913 (NATO STANAG 4694) 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 (recommended for use with shotguns with tall front sight posts). So far Mesa Tactical clamps for the Remington 870 and Mossberg 930 shotguns only (they happen to have the same dimensions). Demand for additional platform support has been resisted because of the difficulty in supporting the wide variety of for example barrel diameters and other differences between shotguns within the same model series. COMPONENTS The following is a breakdown of the various components that make up the Magazine Clamp. Magazine Clamp Mesa Tactical Magazine Clamps provide mounting points for Picatinny rails weapon lights and sling attachments near the muzzle of a tactical shotgun. This designs is CNC machined 6061-T6 aluminum Type III anodized to military specifications. Threaded attachment points feature Timesert steel thread inserts for long thread life even after repeated mounting and removal of accessories. PLATFORMS Magazine Clamps are available for the following 12 gauge shotgun platforms: Remington 870 Remington 1100 Remington 11-87 Mossberg 930 Specifications for Mesa Tactical Remington Model 870 Magazine Clamp: Manufacturer: Mesa Tactical Color: Black Package Contents: Mesa Tactical Magazine Clamp What firearm models does the manufacturer say Mesa Tactical Remington Model 870 Magazine Clamp is compatible with? The manufacturer says that Mesa Tactical Remington Model 870 Magazine Clamp is compatible with Remington Model 870 Mossberg Model 930Mesa Tactical 90810: Magazine Clamp w/ Rail for Remington 12-GA Black