Machined in house by ODIN Works, these ARCA rails are designed to work with any MLok slot. Simply attached one of these ARCA pieces to the gun of your choice and you are then ready to use with the ARCA tripod of your choice. Using ARCA rails and tripods together gives shooters incredibly stable platforms to shoot from while in the field under any circumstance. Extra cuts are made for mounting clearance, weight reduction, and to give the rails a styled look. Machined from billet 6061 and hard black anodized, these ARCA rails will meet your needs.