Product DescriptionThe LBE Unlimited AR Mil-Spec Buffer Tube Kit is a complete carbine receiver extension assembly designed to finish out the rear of an AR-15 lower receiver with dependable, U.S.-made components. This kit includes a six-position mil-spec diameter buffer tube along with a carbine-length recoil spring and standard carbine buffer to help deliver consistent cycling and recoil control. Also included are the receiver end plate and castle nut for a straightforward installation on compatible AR-pattern builds.Product Highlights Complete AR-15 mil-spec buffer tube kit with key recoil system components included Six-position mil-spec diameter receiver extension for adjustable stock length-of-pull compatibility Includes carbine recoil spring and standard carbine buffer for reliable operation Includes receiver end plate and castle nut to complete the assembly Made in the USA by LBE UnlimitedSpecs Brand Name: LBE Unlimited Product Type: AR-15 Mil-Spec Buffer Tube Kit (Carbine Receiver Extension Assembly) Buffer Tube Positions: 6-position Tube Diameter Standard: Mil-Spec Included Components: Buffer tube, carbine recoil spring, carbine recoil buffer, receiver end plate, castle nut Color/Finish: Black Country of Manufacture: USA Manufacturer Part Number: MILBUFKT UPC: 765857617480Disclaimer: 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.