Product Description Upgrade or replace your AR-style recoil system with the LBE Unlimited Buffer Tube Kit. Built with high-quality components and precise manufacturing, this complete kit is designed for dependable cycling and long-term durability. It includes a six-position mil-spec diameter buffer tube, a carbine-length recoil spring, a receiver end plate, a castle nut, and an H1 heavy recoil buffer to help deliver consistent performance you can rely on. Product Highlights Complete AR-style buffer tube kit with essential hardware for installation and service Includes H1 heavy recoil buffer for improved cycling and recoil system tuning Six-position mil-spec diameter buffer tube for adjustable stock positioning Carbine-length recoil spring included for AR-15/carbine buffer systems Mil-spec receiver end plate and castle nut provide secure, durable mounting Specs Brand: LBE Unlimited Manufacturer Part Number: H1BUFKT UPC: 706612408097 Compatibility: AR-15 platforms Buffer Tube: 6-position, mil-spec diameter Buffer: H1 heavy recoil buffer Spring: Carbine-length recoil spring Included Components: Buffer tube, carbine recoil spring, receiver end plate, castle nut, H1 recoil buffer Color/Finish: Black / matte black (varies by distributor) Country of Origin: USA 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.