Armaspec SRS H Gen 4 Buffer Kit with Mil-Spec Tube & Castle Nut
Armaspec
$108.89
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Armaspec
Armaspec SRS H Gen 4 Buffer Kit with Mil-Spec Tube & Castle Nut
The Armaspec SRS-H Gen 4 Buffer Kit is a complete, drop-in recoil management solution that delivers smoother cycling, reduced felt recoil, and everything you need to mount a stock on your AR-15 lower receiver right out of the box.
- Multi-stage SRS-H buffer engineered to tame felt recoil and muzzle rise
- Mil-spec 7075-T6 aluminum 6-position buffer tube for strength and durability
- 3.8 oz SRS-H buffer weight optimized for standard AR-15 carbine applications
- Includes steel castle nut and end plate — no additional hardware needed
- Drop-in compatibility with all AR-15 pattern mil-spec lower receivers
- Gen 4 design refines the proven SRS multi-stage recoil spring system
Who This Is For
This kit is ideal for AR-15 builders, upgraders, and competitive shooters who want a complete buffer assembly in one package — especially those looking to reduce recoil harshness, improve bolt carrier control, and eliminate the need to source individual components separately. It suits everyone from first-time builders assembling a new lower to experienced shooters refreshing a worn-out mil-spec buffer setup.
Specifications
| Brand | Armaspec |
|---|---|
| Model | SRS-H Gen 4 Buffer Kit |
| Buffer Weight | 3.8 oz |
| Buffer Type | Multi-Stage SRS-H Carbine Buffer |
| Buffer Tube | 6-Position Mil-Spec, 7075-T6 Aluminum |
| Includes | SRS-H Buffer, Buffer Tube, End Plate, Castle Nut |
| Compatible Platform | AR-15 Mil-Spec Pattern Lowers |
| Tube Spec | Mil-Spec Diameter |
| Country of Origin | USA |
Frequently Asked Questions
Will the Armaspec SRS-H Gen 4 kit work with my existing AR-15 lower receiver?
Yes. The SRS-H Gen 4 Buffer Kit is designed to fit any AR-15 pattern lower receiver that accepts a standard mil-spec buffer tube. If your lower is mil-spec (as opposed to commercial-spec), this kit will install without modification. If you're unsure, check whether your current or intended stock is rated for mil-spec or commercial-spec tubes — this kit is mil-spec.
How does the SRS-H multi-stage buffer differ from a standard carbine buffer?
Unlike a traditional single-stage carbine buffer, the Armaspec SRS-H uses a multi-stage recoil system that staggers the energy absorption across the bolt carrier group's rearward travel. This results in a smoother, more controlled cycling action, reduced felt recoil, and less battering of your lower receiver — all without requiring changes to your gas system or ammunition selection.
Do I need any special tools or additional parts to install this buffer kit?
No additional parts are required — the kit includes the buffer tube, SRS-H buffer, end plate, and castle nut, covering everything needed to complete the buffer assembly on your lower. Installation requires a standard armorers block and castle nut wrench (also called a spanner wrench), both of which are common AR-15 armorer tools. No gunsmithing experience is necessary for most builders.
