Product Description The LBE Unlimited Mil Spec 4-Position Buffer Tube Kit is a complete, American-made solution for AR-15 and M4 platform rifles. LBE Unlimited designs and builds every component right here in the United States, maintaining rigorous quality control so shooters receive parts they can trust for any application. This all-inclusive kit provides everything required for a full carbine stock assembly, finished in a durable matte black. Whether you are completing a new build or refreshing worn components, this kit delivers mil-spec reliability from a brand committed to American craftsmanship. Product Highlights Complete kit includes a 4-Position Mil Spec Buffer Tube, Castle Nut, Standard End Plate, Carbine Length Recoil Spring, and Standard Recoil Buffer Built to mil-spec standards for reliable, consistent performance on AR-15 and M4 platform rifles Matte black finish provides a durable, professional appearance that resists wear Entirely designed and manufactured in the United States, supporting American jobs and strict quality control Everything needed in one kit, simplifying builds and replacements with a single purchase Specs Brand: LBE Unlimited MPN: MILBUFKT-4POS UPC: 706612408042 Platform Compatibility: AR-15 / M4 Buffer Tube Positions: 4 Specification: Mil Spec Finish: Matte Black Kit Contents: 4-Position Mil Spec Buffer Tube, Castle Nut, Standard End Plate, Carbine Length Recoil Spring, Standard Recoil Buffer Country of Manufacture: United States 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.