{"product_id":"promag-ruger-sr40-40-s-w-10-rd-blued-steel-magazine","title":"ProMag Ruger SR40 .40 S\u0026W 10-Rd Blued Steel Magazine","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eProMag RUG21\u003c\/span\u003e\u003c\/strong\u003e is a replacement magazine engineered for the \u003cstrong\u003eRuger SR40\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e.40 S\u0026amp;W\u003c\/span\u003e\u003c\/strong\u003e pistol. Designed as a direct-fit spare, this magazine feeds a wide variety of factory \u003cstrong\u003e.40 S\u0026amp;W\u003c\/strong\u003e loads without modification, giving SR40 owners a reliable backup for range use or training.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe magazine body is constructed from \u003cstrong\u003eheat-treated blued steel\u003c\/strong\u003e finished with a \u003cstrong\u003eblack oxide\u003c\/strong\u003e coating for corrosion resistance and long service life. Internal components include an \u003cstrong\u003einjection-molded Technapolymer follower\u003c\/strong\u003e, lock plate, and base plate, all engineered for consistent feeding. An \u003cstrong\u003eanti-fatigue spring\u003c\/strong\u003e maintains steady tension to support follow-up shots.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eHolding \u003cstrong\u003e10 rounds\u003c\/strong\u003e of \u003cstrong\u003e.40 S\u0026amp;W\u003c\/strong\u003e, the RUG21 is a solid spare-magazine option for any SR40 shooter. ProMag has engineered this magazine as a direct-fit replacement for the factory SR40 magazine.\u003c\/span\u003e\u003c\/p\u003e","brand":"ProMag","offers":[{"title":"Default Title","offer_id":55337080717634,"sku":"RUG21","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/alt_3d8241eb-0fdc-4aad-8a82-1f2c4fae35ac.jpg?v=1785173109","url":"https:\/\/centerfiresystems.com\/products\/promag-ruger-sr40-40-s-w-10-rd-blued-steel-magazine","provider":"Centerfire Systems","version":"1.0","type":"link"}