Anyone with average- to small hands now can easily perform magazine changes without shifting their firing grip on the weapon. The VT GMR-001 is easy to install, and made of the same tough polymer as the GLOCK(TM) factory part. The extended release is just perfecta |not too short, not too long, i.e. the magazine will not accidentally release if pistol is laid on a hard surface. Perfect with use of back strap mounted lasers. For Gen 1, 2 & 3 pistols only. Not for use with Gen 4 pistols. Fits GLOCK(TM) models G17, 19, 22, 23, 24, 26, 27, 31, 32, 33, 34, 35 and 37. a Extended and radiused, allows magazine release without shifting firing grip a Injection molded from same material as OEM factory part a Fits the majority of Gen 1, 2 &3 GLOCK(TM) pistols OA length: 1.19" Weight: 0.2 oz. Made in USA