Streamlight 69216 TLR-1s High Power RMT Rail Mounted Strobing Tactical Light with Rail Locating Keys and Remote Switch - 775 Lumens C4LED technology One handed snap-on/tighten interface keeps h and s away from muzzle Securely fits a broad range of weapons Mounts directly to all MIL-STD-1913 (Picatinny) rails and weapons with Glock-style rails Strobe mode