This Zaffiri Precision Magwell is compatible with and designed to fit Glock Gen 3 frames. This unique one piece design is contoured to the front of the grip and then locks into the back with a set screw to fit securely without pinching the frame. Note: This magwell is NOT compatible with other aftermarket frames. FeaturesMachined out of 6061 Billet AluminumAnodized BlackIncludes: Magwell and Mounting screw 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.