This is a full-length ARCA Dovetail mount that works with any RRS style attachments including bipods, tripods, plate adaptors, etc. The rail comes complete with the T-nuts and screws to mount to any Foundation stock. The rail weighs 36.8 ounces and is 11.9 ounces heavier than our original aluminum rail with the brass weights installed. The rail is .45” thick and is 13.75” long, made from 1018 cold-rolled steel, stress-relieved, and finished in black nitride. Now featuring R-Lock from really Right Stuff.