Mesa Tactical Remington Model 870 Adapter Mount Pic Rail 12 Gauge 9.5 in Black. Adapter Mount Picatinny Rails fasten to the mounting points on top of the Mesa Tactical High-tube telescoping stock adapters not on the shotgun receiver. The 9 1/2 inch rail attaches to both the High-tube stock adapter and directly to drilled and tapped receivers for a completely rigid mount for optics and accessories. The combination of the rail and cheek weld height is perfect for the use of AR configured optics such as holographic sights and similar height optic systems. The receiver length rail and the strength of its attachment system is perfect for tactical and personal defense applications. 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. Specifications for Mesa Tactical Adapter Mount Pic Rail: Manufacturer: Mesa Tactical Color: Black Fabric/Material: Aluminum Gun Rail: Picatinny Gun Make: Remington Gun Model: Remington Model 870 Gauge: 12 Features of Mesa Tactical Adapter Mount Pic Rail Lifetime warranty Package Contents: Mesa Tactical Adapter Mount Pic Rail Mounting hardware Mesa Tactical 93900: Remington Model 870 Adapter Mount Pic Rail 12 Gauge 9.5 in Black