100% made in the USA, the Light Control System (LCS) is very versatile. It is precision CNC machined from 6061-T6 billet aluminum for superior strength with hardcoat anodized finish, utilizes a slot that ensures a snug, perfect friction-fit, and is fully ambidextrous and reversible. This M-Lok LCSmk1 mount is designed for the Surefire ST07 Remote Tape Switch for Weaponlights. The ST07 Tape Switch fits: SureFire WeaponLights with plug sockets, including Millennium Universal, Classic Universal, Scout Light fitted with socketed tailcap, X300, X400 with XT tailcap assembly.