The Streamlight TLR-8 X sub is a rail-mounted tactical light with an integrated red aiming laser, designed to clamp onto the Springfield Armory Hellcat (Micro-Compact). It combines a 500-lumen white LED with a red laser and runs on a CR123A lithium cell or the optional SL-B9 USB rechargeable battery pack. Features 500-lumen white LED Integrated red aiming laser (Class 3R, Three modes: LED only, LED/laser combined, and laser only Multi-fuel: runs on CR123A or optional SL-B9 USB rechargeable battery Ambidextrous switching; IPX7 waterproof Specifications Output: 500 lumens Peak beam intensity: 5,000 candela Beam distance: 141 meters Red laser: 640-660nm, Battery: one CR123A lithium (included); SL-B9 USB rechargeable optional Runtime: 1.5 hours (CR123A); 1 hour (SL-B9) Fits: Springfield Armory Hellcat (Micro-Compact). Does not fit Hellcat Pro. Springfield Armory and Hellcat are trademarks of Springfield, Inc.; 3CR Tactical is not affiliated with or endorsed by Springfield Armory. Reference is for fitment only.