{"product_id":"weaver-mounts-417m-top-mount-base-1-piece-matte-black-aluminum-mossberg-500","title":"Weaver Mounts 417M Top Mount Base 1-Piece Matte Black Aluminum Mossberg 500","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eWeaver 417M Top Mount Base\u003c\/span\u003e\u003c\/strong\u003e is a one-piece \u003cstrong\u003escope base\u003c\/strong\u003e machined from \u003cstrong\u003ealuminum\u003c\/strong\u003e and finished in \u003cstrong\u003ematte black\u003c\/strong\u003e for \u003cstrong\u003eMossberg 500\u003c\/strong\u003e (1997 and later), \u003cstrong\u003e590\u003c\/strong\u003e, and \u003cstrong\u003e835\u003c\/strong\u003e shotguns. Designed to mount directly to the receiver of 12 gauge models, it provides a stable platform for clamping Weaver-pattern scope rings in place.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eEach base is machined to tight tolerances for a custom fit to the Mossberg receiver, giving the base maximum strength so the rings hold tight under heavy recoil. The integrated \u003cstrong\u003eWeaver cross-slot\u003c\/strong\u003e pattern accepts any standard Weaver-style ring set, letting you top-mount a riflescope or red dot on your pump-action shotgun. Per Weaver's base chart, the top mount is intended for \u003cstrong\u003e12 gauge\u003c\/strong\u003e models only, and the rear base screws must be shortened by grinding to clear the receiver.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThis listing is for the \u003cstrong\u003ebase only\u003c\/strong\u003e; no rings are included. Mounting screws are supplied with the base. The low-glare matte black finish blends with factory shotgun finishes.\u003c\/span\u003e\u003c\/p\u003e","brand":"Weaver Mounts","offers":[{"title":"Default Title","offer_id":54993010884930,"sku":"63283","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_1bcf863d-9410-46e3-b1b2-c6436fcbe8e9.png?v=1784254735","url":"https:\/\/centerfiresystems.com\/products\/weaver-mounts-417m-top-mount-base-1-piece-matte-black-aluminum-mossberg-500","provider":"Centerfire Systems","version":"1.0","type":"link"}