The Armaspec Stealth Recoil Spring Gen 4 in H1 (Armaspec part no. ARM253-H) replaces the plain buffer spring in an AR recoil system with a quiet, two-stage captured design. H1 is the 3.8 oz equivalent weight in the line, which Armaspec points to short-barrel builds in 5.56 NATO or .300 BLK. Armaspec built the SRS to remove the metallic twang of a standard buffer spring while it cycles. The multi-stage spring also gives a smoother, more elastic recoil impulse than a single coil. It is a straightforward upgrade for a short-barrel build that you want to run quieter.

Key Specifications

• The weight is H1, a 3.8 oz equivalent, one of several buffer weights in the Stealth Recoil Spring line.
• This is the Gen 4 SRS, the revision Armaspec released for 2023.
• The spring is a two-stage, multi-spring system that gives a smoother, more elastic recoil impulse than a single spring.
• Operation is silent, because the design eliminates the twang of a standard AR-15 buffer spring.
• The spring is self-contained and keeps constant tension on the rear of the bolt.
• Because of that constant tension, no buffer spring retainer is needed in new builds.
• Armaspec recommends the H1 for short-barrel builds in 5.56 NATO or .300 BLK, among other uses.
• Armaspec backs the line with a lifetime warranty against defects in material or workmanship.

Frequently Asked Questions

What does the H1 weight mean? H1 is the 3.8 oz equivalent weight in Armaspec’s Stealth Recoil Spring line. Armaspec suggests it for short-barrel builds in 5.56 NATO or .300 BLK, 6.5 Grendel, and piston systems.

Do I still need a buffer spring retainer? Not for a new build. The SRS keeps constant tension on the rear of the bolt, so Armaspec notes the buffer spring retainer is not needed.

Will it make the rifle quieter? Armaspec describes the two-stage SRS as silent in operation. It eliminates the twang a standard AR-15 buffer spring makes when the action cycles.

Buy the Armaspec Stealth Recoil Spring Gen 4, H1

Recoil springs are cheap compared with what they change, and this one is aimed squarely at builders who dislike the rattle of a stock buffer spring. Pair it with the rest of your lower from our selection of AR buffer system parts, then order from our Lubbock, Texas gun shop for fast, insured shipping.