{"product_id":"m-p-9-40-mag-extension-fde","title":"Warne M\u0026P 9\/40 Magazine Extension FDE – +5\/+4 Round Capacity","description":"\u003cp\u003eThe Warne M\u0026amp;P 9\/40 Magazine Extension increases capacity on Smith \u0026amp; Wesson M\u0026amp;P 9mm and .40 S\u0026amp;W magazines. This extension adds 5 rounds to 9mm magazines and 4 rounds to .40 S\u0026amp;W magazines, providing extra capacity without compromising reliability. Finished in Flat Dark Earth (FDE) for a subdued, professional appearance that coordinates with FDE-framed pistols.\u003c\/p\u003e\u003cp\u003eConstructed from durable polymer with an internal steel spring retention system. Installation requires a replacement spring (not included). Compatible with factory Smith \u0026amp; Wesson M\u0026amp;P full-size magazines. Maintains flush fit at the base of the extension for a clean look and stable grip on extended magazines.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Magazine base pad extension\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e Smith \u0026amp; Wesson M\u0026amp;P 9mm and .40 S\u0026amp;W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity Increase:\u003c\/strong\u003e +5 rounds (9mm) \/ +4 rounds (.40 S\u0026amp;W)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polymer body with steel retention components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Flat Dark Earth (FDE)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Extension base pad only (replacement spring required, sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Competition shooting, duty carry, or extended range sessions where increased capacity is desired\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Warne","offers":[{"title":"Default Title","offer_id":47944255111423,"sku":"WNMESW-5\/4DE","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/darkearthsigmagextensioned2d.png?v=1766634775","url":"https:\/\/doublestackstore.com\/products\/m-p-9-40-mag-extension-fde","provider":"Double Stack Store","version":"1.0","type":"link"}