PowerApp LumenTactical 250 Lumen Quick Release Pistol LED flashlight/w Strobe for Glock G17, G20, G21, G22, G31, G37, G19, G23, G32, G38 etc Super Bright: 250 lumens with Advanced Cree XP-G R5. Strobes too! Easy to Put On and Take off with Quick Release Mount Fits Glock standard and compact sizes: G17, G20, G21, G22, G31, G37, G19, G23, G32, G38 Compatible with most of Standard & Compact Pistols with Accessory Rail (see Description for detail fitting guide) One-year Warranty service from US Manufacturer