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The Armaspec Stealth SRS Gen4 is a self-contained, multi-stage unit that drops straight into a carbine-length buffer tube in place of your standard buffer and spring. Anyone who has run a stock AR knows the sound: that metallic twang and spring rattle every time the action cycles. This design keeps the spring off the inner wall of the buffer tube, so instead of that noise you get smooth, quiet operation and a softer, more elastic recoil impulse rather than the sharp mechanical slap of a factory setup.
The two-stage spring is the heart of it. The first stage handles normal cycling while the second stage soaks up energy at the back end of travel, which is where you feel that reduction in recoil. Because the whole assembly stays under constant tension against the bolt carrier, it holds everything in check and does away with the free-floating spring bouncing around inside the tube. It can run with or without a buffer retainer, and plenty of folks skip the retainer entirely for easier cleaning down the road.
This is the kit version, so you are not locked into one weight. It comes assembled as a Carbine (roughly 3.3 oz equivalent) and includes H (3.8 oz) and H2 (4.7 oz) buffer weights. That range lets you tune around your gas system, ammo, and whether or not you are running a suppressor or muzzle device. Overall length is about 7.18 inches, matching a standard carbine setup.
Armaspec reworked the Gen4 to shed potential failure points, swapping the old screw for a roll pin across the end piece, machining the cap onto the rod, and replacing the snap ring with a washer. It is made in the U.S.A. and fits AR-15 rifles chambered in .223 Rem and 5.56x45mm with a carbine buffer tube. Worth noting for compatibility: most bolt carriers have a rear opening over .60 inches and work fine, though a small handful of carriers with a smaller opening will not accept the SRS.
Yes. It replaces your standard buffer and spring in a carbine-length tube with no permanent modifications. You can run it with or without a buffer retainer, and most people skip the retainer for easier maintenance. Before installing, it is a good idea to re-tighten the screws with a 3/32 hex key, and check them again anytime you do maintenance.
The kit ships assembled as a Carbine weight at around 3.3 oz equivalent, and the included H (3.8 oz) and H2 (4.7 oz) weights let you add mass to the system. Heavier weights slow the bolt slightly, which can smooth out cycling on over-gassed guns or suppressed setups. Having all three means you can tune the rifle to your ammo and gas system without buying separate parts.
Most standard AR-15 bolt carriers have a rear opening larger than .60 inches and work with the SRS. There are a few carriers on the market with a smaller rear opening that will not accept it, so it is worth measuring yours if you are running something unusual. Standard mil-spec carriers are not a problem.
It goes a long way toward killing that classic AR spring twang. By keeping the spring from rubbing against the inner wall of the buffer tube, the cycling sound is noticeably cleaner and the action feels smoother. You also get a softer, more elastic recoil impulse compared to a bare buffer and spring.
| UPC | 810048492824 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ARM253-AR15KIT |
| Color | Black |
| Model | |
| Product Type | Buffer |
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