Guaranteed to give you an edge, we have designed our PMB (Pistol Magazine Base) with the competitive and noncompetitive shooter in mind. Introducing the GLOCK PMB: Ergonomically machined to fit perfectly in the palm of your hand for effortless stripping, our weighted base allows for rapid mag changes and 5 extra rounds all while remaining well within the 140 mm gauge limits of USPSA. This mag base is compatible with the Glock 17 (full size 9mm). CNC machined right here in Boise, ID out of 6061 billet aluminum and hard anodized to ensure durable, long-lasting color the GLOCK PMB comes complete with an extra power spring and our proprietary threaded pin to ensure extremely limited mag failures. The ODIN PMB will keep you at the top of your game. Also available in S&W M&P and SIG 320 models. Features Dimensions: 1.7″ x 1.23″ x 1.37″ at widest points Weight: 1.5 oz (Base and Screw) Material: 6061 Aluminum Compatibility: Full Size 9mm Glock 17 & .40 Cal Includes: Extra Power Spring, Threaded Push-Pin, Allen Wrench 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.