Product Description The TacFire MAR084 Mil-Spec M4 Stock Kit is a complete, Mil-Spec carbine stock assembly designed to outfit an AR-15/M4 lower with the core components needed for a standard collapsible stock setup. This black kit includes an M4-style stock paired with a Mil-Spec 6-position buffer tube and the essential recoil system parts and mounting hardware for a straightforward installation or rebuild. Product Highlights Complete Mil-Spec M4-style stock kit for AR-15/M4 carbine builds and replacements Mil-Spec 6-position buffer tube supports a wide range of length-of-pull adjustments Includes 3 oz buffer and carbine-length buffer spring for standard carbine recoil systems Comes with castle nut and end plate for proper receiver extension installation Durable, practical black finish to match common AR platform components Specs Brand: TacFire Manufacturer Part Number: MAR084 UPC: 811261024168 Platform Fit: AR-15/M4 (Mil-Spec) Color: Black Buffer Tube: Mil-Spec, 6-position Included Components: Mil-Spec 6-position buffer tube, M4-style stock, 3 oz buffer, carbine-length buffer spring, end plate, castle nut Materials (as listed by retailer): Steel / Aluminum / Polymer 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.