Armaspec SRS Gen 4 Buffer Kit with Mil-Spec Tube & Castle Nut
Armaspec
$108.89
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Armaspec
Armaspec SRS Gen 4 Buffer Kit with Mil-Spec Tube & Castle Nut
The Armaspec SRS Gen 4 Buffer Kit delivers a complete, drop-in buffer system upgrade for AR-15 pattern rifles, combining a mil-spec buffer tube with Armaspec's acclaimed Silent Recoil Spring technology for smoother, quieter cycling and reduced felt recoil.
- Mil-spec 7075-T6 aluminum 6-position buffer tube for maximum strength and durability
- SRS Gen 4 multi-stage buffer eliminates spring noise for a quieter shooting experience
- Complete kit includes buffer tube, SRS buffer, end plate, and castle nut
- SRS-C buffer weight of 3.3 oz optimized for standard AR-15 carbine configurations
- Reduces felt recoil and muzzle rise for faster follow-up shots on target
- Compatible with all mil-spec AR-15 lower receivers and collapsible stocks
Who This Is For
This kit is ideal for AR-15 builders and upgraders who want a complete, reliable buffer system in one package — from competitive shooters seeking tighter split times to home-defense rifle owners who want a softer, more controllable shooting platform. It's also a perfect solution for gunsmiths and enthusiasts doing full lower builds who don't want to source individual components separately.
Specifications
| Brand | Armaspec |
|---|---|
| Model | SRS Gen 4 Buffer Kit |
| Buffer Weight | 3.3 oz (SRS-C) |
| Buffer Type | Multi-Stage Silent Recoil Spring (SRS) |
| Buffer Tube Material | 7075-T6 Aluminum |
| Buffer Tube Spec | Mil-Spec, 6-Position |
| Kit Includes | SRS Buffer, Buffer Tube, End Plate, Castle Nut |
| Compatible Platforms | AR-15 Pattern Carbines |
| Country of Origin | USA |
Frequently Asked Questions
What makes the SRS Gen 4 buffer different from a standard carbine buffer?
Unlike a standard carbine buffer that uses a single steel weight and a conventional recoil spring, the Armaspec SRS Gen 4 uses a multi-stage internal design that eliminates the characteristic "sproing" sound associated with standard AR-15 buffer springs. The result is a noticeably quieter cycling action, reduced bolt carrier group velocity, and less felt recoil — all without requiring any modification to your lower receiver or stock.
Will this buffer kit work with my adjustable gas system or suppressed AR-15?
The SRS-C buffer at 3.3 oz is designed for standard carbine-length gas systems running unsuppressed. If you're running a suppressor or an adjustable gas block, you may benefit from a heavier buffer variant (such as the SRS-H) to manage the increased backpressure. We recommend consulting Armaspec's buffer weight guide or reaching out to our team at Goodland Guns for a personalized recommendation based on your specific setup.
Is everything needed to install a collapsible stock included in this kit?
Yes — this kit includes all four essential components needed to mount a mil-spec collapsible stock to an AR-15 lower receiver: the 6-position mil-spec buffer tube, the SRS Gen 4 buffer, the end plate, and the castle nut. You will still need a collapsible stock of your choice and a receiver extension wrench or armorer's tool to properly torque the castle nut during installation.
