The Rival Arms Grip Plug improves the balance and prevents debris buildup in the grip of your Glock. The weight increase of the plug in the lower portion of the frame also helps to reduce felt recoil. This makes follow-up shots faster and more consistent. FeaturesCNC-machined aluminum Hard black anodized finish 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.