{"product_id":"backup-mag-ext-for-glk-19-23-5-blk","title":"Backup Tactical Magazine Extension for Glock 19\/23 +5 Black","description":"\u003cp\u003eThe Backup Tactical Magazine Extension adds five rounds to factory Glock 19 and Glock 23 magazines, increasing capacity from 15 to 20 rounds (9mm) or 13 to 18 rounds (.40 S\u0026amp;W). This extension provides a substantial capacity increase for competitive shooting, home defense, or duty use without requiring a larger frame pistol. The added length also improves grip purchase for shooters with larger hands.\u003c\/p\u003e\u003cp\u003eMachined from billet aluminum with a hard-anodized black finish, this extension includes a reinforced spring and follower assembly designed to maintain reliable feeding under the increased spring tension. Installation requires disassembly of the factory magazine base plate and replacement with the extension components—basic tools and attention to detail are needed, but no professional gunsmithing is required. Verify local magazine capacity laws before purchase.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Magazine Extension\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e Glock 19, Glock 23\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity Increase:\u003c\/strong\u003e +5 rounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Billet Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Hard-Anodized Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e User-Installable (Magazine Disassembly Required)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Extension Body, Reinforced Spring, Follower\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Backup Tactical","offers":[{"title":"Default Title","offer_id":47936957120767,"sku":"BACKG1923MEXT-BLK","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/2855770.jpg?v=1766483349","url":"https:\/\/doublestackstore.com\/products\/backup-mag-ext-for-glk-19-23-5-blk","provider":"Double Stack Store","version":"1.0","type":"link"}