{"product_id":"geissele-lpk-ultra-duty-blk","title":"Geissele Automatics Ultra Duty Lower Parts Kit – AR-15\/AR-10","description":"\u003cp\u003eThe Geissele Ultra Duty Lower Parts Kit provides all the essential components to complete an AR-15 or AR-10 lower receiver build, excluding the trigger group, grip, and stock hardware. This kit includes the fire control group pins, takedown and pivot pins, bolt catch assembly, magazine catch assembly, trigger guard, and safety selector—all manufactured to Geissele's mil-spec standards. It's designed for builders who already have a preferred aftermarket trigger and grip or who want to customize those components separately.\u003c\/p\u003e\u003cp\u003eAll components are machined from steel with a black oxide finish for corrosion resistance and durability. The parts are drop-in compatible with mil-spec lower receivers and require standard AR assembly tools and basic armorer knowledge. The Ultra Duty designation reflects Geissele's focus on dimensional consistency and material quality for duty-grade builds.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Lower Parts Kit (no trigger, grip, or stock hardware)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15, AR-10 (mil-spec lowers)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In (standard armorer tools required)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Fire control pins, takedown\/pivot pins, bolt catch assembly, magazine catch assembly, trigger guard, safety selector\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Geissele Automatics","offers":[{"title":"Default Title","offer_id":47943522484479,"sku":"GEI05-435B","price":153.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/5492129.jpg?v=1766582808","url":"https:\/\/doublestackstore.com\/products\/geissele-lpk-ultra-duty-blk","provider":"Double Stack Store","version":"1.0","type":"link"}