Product Description The Armaspec SRS-9 Gen4 Buffer Tube Kit is a comprehensive, all-in-one solution designed to mount a stock assembly onto an AR-9 pattern lower receiver. This kit pairs a mil-spec 7075-T6 6-position buffer tube with the latest generation of Armaspec&';s Stealth Recoil Spring (SRS) system, delivering a smooth, quiet, and reliable shooting experience. The SRS Gen4 is a self-contained, multi-stage drop-in replacement for a standard buffer and spring. Its innovative design keeps the buffer spring from rubbing against the inner wall of the buffer tube, reducing noise and friction, while the second stage of the system significantly reduces felt recoil. The Gen4 revision improves on previous versions by eliminating the o-ring on the weight, replacing the screw with a roll pin across the plastic end piece, machining the cap directly onto the rod, and swapping the snap ring for a washer - all changes made to eliminate potential failure points and increase long-term durability. Product Highlights Complete kit includes SRS-9 buffer (6.4 oz), mil-spec 7075-T6 aluminum 6-position buffer tube, steel castle nut, and endplate for a full stock assembly setup Gen4 design improvements include a roll pin replacing the screw, a machined cap on the rod, and a washer replacing the snap ring to reduce potential failure points Stealth Recoil Spring (SRS) system prevents buffer spring contact with inner tube walls, providing smooth, quiet cycling operation Multi-stage recoil buffer system significantly reduces felt recoil for improved comfort and follow-up shot accuracy Specifically designed to fit AR-9 pattern firearms, offering broad compatibility with 9mm AR-style platforms Specs Brand: Armaspec Manufacturer Part Number (MPN): ARM263-9 UPC: 810048492886 Color: Black / Stainless Buffer Weight: 6.4 oz Buffer Tube Material: Mil-Spec 7075-T6 Aluminum Buffer Tube Positions: 6-Position Castle Nut Material: Steel End Plate Material: Steel Generation: Gen4 Compatible Firearm Platform: AR-9 Pattern Firearms Finish: Matte 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. ]]>