Securely fits a broad range of guns; verify fitment and compatibility before purchase Note: Any Sig Sauer frame with a round-bottom rail is not recommended; may result in damage to firearm or light; Not designed for Springfield Armory XD with 3-Inch barrel Features 1300 Lumens, 77,000 Candela, 555 Meter beam distance, and a programmable strobe Rail clamp system securely attaches/detaches quickly and safely with no tools and without putting your hands in front of the muzzle Features interchangeable switches so users can customize their setup with switch options tailored to different handling preferences