Rem 700 Short Action high BAR Straight Railed night vision mount is constructed of T6 7075 hard coated black anodized aluminum with a full 1913 rail. Base is 16" long and comes with #8-40 torx head screws for mounting base (these screws will require most receivers to be drilled out from a #6 screw.) Rail has side mounting holes on for adding rails to the side in the future (not included). Weighs 10.4 ounces.  The rail is thicker to increased the clearance for full bull barrels no clearance from the receiver.