The Xtech Tactical lower parts kit for the AR-15 is a complete, high-quality solution for assembling or upgrading your rifle's lower receiver. This kit includes all the essential components, such as the trigger group, hammer, pistol grip, selector switch, buffer tube and springs, all crafted from durable materials to ensure reliability and performance. Designed for ease of installation, this lower parts kit is perfect for DIY builders and those looking to customize their AR-15. Whether you're building a new rifle or upgrading an existing one, the provides everything you need to assemble a smooth-operating, high-performance lower receiver. Comes with (30) key components necessary for the full assembly of an AR-15 lower receiver Customizable grip angles of 17, 25 and 33 degree with easy adjustments using the included hex key Built with rugged, durable construction for long lasting performance and reliability All necessary hardware is included for easy installation Backed by a lifetime warranty Manufactured in specialized factories to ensure high-precision and quality California compliant, meeting all necessary state regulations and requirements