Anyone with average- to small hands now can easily perform magazine changes without shifting their firing grip on the weapon. The VT GMR-004 is easy to install, and made of the same tough polymer as the Glock factory part. The extended catch 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. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.