The Streamlight TLR-3X Weaponlight is a compact tactical lighting solution designed for 1913 Picatinny rail systems with convenient USB charging capability.Streamlight TLR-3X Tactical Weaponlight1913 Picatinny rail compatible mounting systemSlim profile design for reduced bulkUSB rechargeable with SL-B9 battery systemIncludes mount key tool for secure installationDurable black finish constructionIdeal for law enforcement military and civilian tactical applications where reliable illumination and compact mounting are essential for weapon systems.