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The Armaspec SRS Buffer Kit H3 Gen 4 takes care of the whole back end of your AR-15 in one shot. Instead of piecing together a tube, castle nut, end plate, and buffer setup separately, you get a matched package built around the Stealth Recoil Spring, Armaspec's take on a captured buffer and spring assembly. The kit uses a mil-spec 7075-T6 six-position buffer tube, so it drops right onto any standard mil-spec lower and plays nice with just about any collapsible stock you want to run.
The heart of this kit is the Stealth Recoil Spring itself. Rather than a bare spring bouncing around inside your tube, the SRS runs everything over an internal guide rod so the spring never scrapes the tube wall. That's where the smoother, quieter action comes from. It's a multi-stage design too, meaning the first stage keeps the buffer mass under constant tension against the bolt carrier while a second stage kicks in during cycling to soak up more of the felt recoil. The end result is a rifle that runs a little softer on the shoulder and loses that classic spring twang you hear on a standard build. Folks who run one tend to notice flatter, more controlled cycling and easier follow-up shots.
This version comes tuned as the H3, which carries an equivalent weight of 5.6 oz, making it the heaviest in the standard SRS lineup. That extra mass is a real asset on short-barreled uppers, pinned setups, and guns running a hot gas system that tend to cycle hard. If your rifle is beating up brass or feeling snappy, stepping up to the H3 helps settle it down. Lighter or standard 16-inch carbine builds may run better on a lighter weight, so match it to how your gun actually behaves.
The Gen 4 revision cleans up a few things over older versions. Armaspec dropped the o-ring on the weight, machined the cap onto the guide rod, and reworked the end hardware to trim out potential failure points. Installation is straightforward: hinge open your upper, pull the old buffer and spring, drop in the SRS, and you're set. Everything is made in the U.S.A. and backed by Armaspec's lifetime warranty. One thing worth checking before you order is your bolt carrier's rear opening, since the guide rod stem travels up into the carrier and a small number of non-standard carriers with an opening under about .60 inches won't clear it.
It replaces your standard buffer and spring with a single self-contained unit that runs the spring over an internal guide rod. That keeps the spring off the tube wall for smoother, quieter cycling, and the multi-stage design helps reduce felt recoil. Most people notice flatter cycling and easier follow-up shots.
The H3 is the heaviest option in the standard SRS lineup at 5.6 oz equivalent weight, so it shines on short-barreled uppers, pinned builds, and rifles with a hot gas system that cycle hard. If your gun feels snappy or is throwing brass aggressively, the H3 helps calm it down. Standard 16-inch carbines and lighter builds often do better with a lighter weight.
Yes, it uses a mil-spec 7075-T6 six-position buffer tube, so it fits standard AR-15 mil-spec lowers and works with the usual collapsible stocks. One thing to verify is your bolt carrier's rear opening, since the guide rod stem travels into the carrier. Most carriers have an opening over .60 inches and work fine, but a few non-standard ones under that won't clear.
Armaspec removed the o-ring that used to sit on the weight, machined the cap onto the guide rod, and reworked the end hardware to cut out potential failure points. It's a durability-focused refinement over earlier generations. The kit is made in the U.S.A. and carries a lifetime warranty.
| UPC | 810048492862 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ARM263-H3 |
| Product Type | Buffer Tube Complete Assembly |
| Model | |
| Color | Black |
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