{"product_id":"armaspec-lpk-sts-223-556-blk","title":"Armaspec LPK STS Lower Parts Kit for AR-15 – .223\/5.56 (Black)","description":"\u003cp\u003eThe Armaspec LPK STS (Lower Parts Kit with Silent Trigger Spring) is a complete lower parts kit for AR-15 platform rifles chambered in .223\/5.56. This kit includes all the small parts needed to complete a stripped AR-15 lower receiver, featuring Armaspec's sound-dampening trigger spring technology that reduces the metallic ping common with standard trigger springs. Whether you're building a new rifle or replacing worn components, this kit provides quality internals for reliable function.\u003c\/p\u003e\u003cp\u003eConstructed with mil-spec dimensions and a black finish, the LPK STS is a drop-in installation for builders with basic armorer skills and standard tools (punch set, hammer, and bench block recommended). The kit includes trigger, hammer, disconnector, springs, pins, and all necessary detents—everything except the pistol grip and trigger guard, which are typically chosen separately to match the builder's preferences.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Complete Lower Parts Kit (minus grip and trigger guard)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15 platform rifles (.223\/5.56)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel components, mil-spec dimensions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-in with standard armorer tools\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Trigger assembly, hammer assembly, disconnector, all springs, pins, and detents (excludes pistol grip and trigger guard)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Armaspec","offers":[{"title":"Default Title","offer_id":47940708466943,"sku":"ARMASPEC152BLK","price":71.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1241420.jpg?v=1766565832","url":"https:\/\/doublestackstore.com\/products\/armaspec-lpk-sts-223-556-blk","provider":"Double Stack Store","version":"1.0","type":"link"}