Rem 700 Short Action 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.