Armaspec SRS-C Buffer Tube Kit AR-15 Gen 4 6-Position Black

The Armaspec SRS-C Buffer Tube Kit is a complete drop-in stock-mount assembly for AR-15 platforms, pairing a mil-spec 7075-T6 aluminum 6-position buffer tube with the innovative Gen 4 Stealth Recoil Spring system and the steel castle nut and end plate needed to secure it to any standard lower receiver.

At the heart of the kit is the Armaspec SRS Gen 4, an enhanced multi-stage buffer and spring unit designed as a direct replacement for a standard AR-15 carbine buffer and spring. The SRS-C configuration delivers an equivalent weight of 3.3 oz for balanced recoil control in a wide range of carbine builds, reducing felt recoil and smoothing the cycling action.

The included buffer tube is machined from mil-spec 7075-T6 aluminum with a matte black finish and six user-adjustable positions to set length of pull for any shooter. A steel castle nut and matching steel end plate are included for a secure, mil-spec mount to the lower receiver, making this a true one-stop upgrade for AR-15 builders and shooters looking to replace a standard buffer and spring.

The SRS unit is 7.18" long and installs in a standard carbine-length buffer tube. As a drop-in replacement, no permanent modifications are required - simply remove the existing buffer and spring, drop in the SRS Gen 4, reinstall the castle nut and end plate, and reassemble.