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 Picatinny LCSmk1 mount is designed for the Surefire ST07 Remote Tape Switch for weapon lights. The ST07 Tape Switch fits: SureFire Weapon Lights with plug sockets, including Millennium Universal, Classic Universal, Scout Light fitted with socketed tailcap, X300 and X400 with XT tailcap assembly. When properly fitted with the SureFire socketed tail cap, this product is also compatible with the Arisaka Defense Scout Series lights.