{"product_id":"cmmg-parts-kit-ar15-upper-pins-sprng","title":"CMMG AR-15 Upper Parts Kit – Pins \u0026 Springs","description":"\u003cp\u003eThe CMMG AR-15 Upper Parts Kit provides essential small components for completing or repairing an AR-15 upper receiver. This kit includes the forward assist assembly (spring and pin), ejection port cover assembly (spring, C-clip, and pin), and associated hardware—critical parts that are easily lost during builds or wear out over time. Whether you're assembling a new upper from scratch or replacing damaged components, this kit ensures you have the correct factory-spec parts on hand.\u003c\/p\u003e\u003cp\u003eAll components are machined to mil-spec dimensions and feature durable phosphate or black oxide finishes where applicable. Installation is straightforward for builders familiar with AR-15 assembly, though care must be taken with small springs and pins. A roll pin punch set and armorer's block are recommended to avoid marring the receiver or losing parts during installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Upper receiver small parts kit (forward assist \u0026amp; ejection port cover assemblies)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15 \/ M16 \/ M4 upper receivers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Phosphate \/ Black oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-in for experienced builders; professional installation recommended for first-time assemblers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Forward assist spring, forward assist pin, ejection port cover spring, ejection port cover C-clip, ejection port cover pin\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CMMG","offers":[{"title":"Default Title","offer_id":47943496007935,"sku":"CMMG55AFF2F","price":12.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1256377.jpg?v=1766579550","url":"https:\/\/doublestackstore.com\/products\/cmmg-parts-kit-ar15-upper-pins-sprng","provider":"Double Stack Store","version":"1.0","type":"link"}