This is a full-length Dovetail mount that works with any RRS attachments including bipods, tripods, plate adaptors, etc. The rail comes complete with the hardware needed to mount to an M-Lok rail or T-nuts installed in the stock can be used. The rails weigh 24.9 oz. with the brass weights installed. The rails are .45” thick and are 13.75” long and are made from 6061-T6511 aluminum and then anodized for protection.