All Mesa Tactical Picatinny rails adhere to the MIL-STD 1913 specification for firearm accessory rails. It is machined from 6061-T6 aluminum alloy, then bead blasted and Type III hard anodized for a rugged, flat black finish. Mesa Tactical Picatinny rails include all necessary mounting hardware.
Mesa Tactical Saddle Rails are 6061-T6 aluminum brackets that wrap around the top of the shotgun receiver. The factory trigger pins are replaced by an internally threaded steel pin (in the rear) and paired Chicago screws (up front), to which both sides of the saddle rail are securely bolted. The saddle rail is Type III anodized for a rugged surface finish.
The Saddle Rail is specially contoured to allow operation of a semi-automatic bolt on the right side of the receiver, so it can be installed on Remington 1100 and Remington 11-87 semi-auto shotguns as well as Remington 870 pump shotguns. The rail is notched at the rear to accommodate Scattergun/Wilson style ghost ring sights, and extends to the front of the shotgun receiver (5 inch rail), 2¾ inches past the front of the receiver (8½ inch rail).
No gunsmithing is required to install. Minor fitting of fasteners may be necessary.
Note: The saddle rail is designed for the larger receiver of the 12ga 870. It will fit the smaller 20ga 870, 7600 and 7615 sized receivers with some shortening of the mounting screws (easily accomplished with a file).