The 360 Precision Lightweight ARCA Rail allows you at connect any ARCA or dovetail attachments including bipods, tripods, plate adaptors, etc. to the bottom of your rifle. The rail connects to the rifle using M-LOK. The rail comes complete with (5) 10-24 screws and (5) M-LOK nuts to mount to your Rifle, Handguard or Forend that features the M-LOK system. The rail weighs 4.3 oz. and is .19” thick and 9” long. It is made from 6061-T6511 aluminum and then anodized for protection. These rails also feature Really Right Stuff’s R-Lock system. The R-Lock system is comprised of dimples on the bottom of the rail that works with the RRS ARC-LR – Lever Release Clamp as well as any other ARCA based attachment.