The aluminum mag catch from Shield Arms is machined from billet 6061 aluminum and slightly extended over the OEM mag catch. Sheld Arms chamfered and textured the button for secure engagement during reloads. Product Specifications Machined from billet 6061 aluminum Chamfered, textured button Compatible with Glock OEM 43X / 48 magazines Compatible with Shield Arms S15 magazines Type 3 hard coat anodized Made in the USA 100% lifetime warranty DISCLAIMER: GLOCK is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. or GLOCK Ges.mbH. Neither Sportsmans Outdoor Superstore nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.mbH. The use of GLOCK on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For genuine GLOCK, Inc. and GLOCK Ges.mbH products and parts visit www.glock.com.