Product DescriptionThe KAK Industry AR-15 Lower Parts Kit (LPK) Basic Build Kit includes essential, mil-spec style small parts needed to complete an AR-15 lower receiver. Built for broad AR-15 compatibility, it's a practical choice for new builds, upgrades, and repairs. This "basic build" kit is intended for use with the hammer and trigger of your choice (hammer and trigger not included).Product Highlights Essential AR-15 lower receiver parts kit for completing a lower build Mil-spec magazine release components (release, spring, and button) Includes bolt catch hardware, buffer retainer parts, and safety selector components Pivot and takedown pins with detents and springs for proper receiver assembly Convenient basic-build kit packaging (often supplied in a yellow bag)Specs Brand: KAK Industry Product Type: AR-15 Lower Parts Kit (Basic Build Kit) Manufacturer Part Number: AR15-LP-KT-02 UPC: 811163035811 Compatibility: AR-15 / mil-spec style lower receivers Included Components (as listed by retailer sources): Mil-spec magazine release, spring, and button; mil-spec hammer and trigger springs; mil-spec hammer and trigger pins; mil-spec bolt catch, spring, plunger, and roll pin; mil-spec buffer retainer and spring; mil-spec pivot pin, spring, and detent; mil-spec takedown pin, spring, and detent; mil-spec safety selector, spring, and detent; mil-spec disconnector spring Not Included: Hammer and trigger (per retailer description)Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.