The Armaspec enhanced buffer tube kit is your complete solution for mounting a stock assembly onto a lower receiver. This kit includes essential components such as a Mil-Spec 7075-T6 6-position buffer tube, a robust steel castle nut and end plate and the innovative SRS GEN4 Enhanced Multi-Stage Recoil Buffer System. The Stealth Recoil Spring (SRS) GEN4 is a self-contained, drop-in replacement for standard buffers and springs. It features a multi-stage design aimed at preventing the buffer spring from rubbing against the inner walls of the buffer tube, ensuring smooth and quiet operation. The second stage of the SRS significantly reduces felt recoil, enhancing control and comfort during firing.