The Taran Tactical Innovations GLOCK pad works on GLOCK add extra weight to magazine which helps the empty mag drop free easier for faster reloads. The TTI GLOCK base pad, just like all of Taran's base pads are designed to give you the edge over your competitors. it features the patented push pin design to lock the base pad to the magazine, which makes for easy field stripping and cleaning of your magazines between stages. Just push the down the pin, slide the base pad onto the magazine and push the pin up to lock the base pad onto the magazine. Its one piece design is great because there are no extra parts or tools needed to attach the base pad to your magazine. The base pad itself is machined out of billet aluminum and is hard anodized to ensure durable long lasting color. All machining and manufacturing is done in the USA.