Armaspec SRS Buffer Kit Gen 4 - Advanced Recoil Management System for AR-15 Platforms

The Armaspec SRS Buffer Kit Gen 4 is a complete recoil management system designed for AR-15 pattern rifles. This kit bundles everything you need to mount a stock assembly on your lower receiver: a mil-spec 7075-T6 aluminum buffer tube with six adjustable positions, a steel castle nut, end plate, and Armaspec's SRS recoil buffer. Whether you're building a new AR from the ground up or upgrading an existing platform, this is a straightforward way to dial in the feel and performance of your rifle with a quality buffer system engineered to manage recoil consistently.

The SRS buffer represents Armaspec's multi-stage approach to recoil impulse. At 3.3 ounces, it's designed to work with AR-15 platforms to smooth out bolt carrier group travel and reduce felt recoil compared to standard mil-spec buffers. The six positions on the buffer tube give you the flexibility to tune for different loads, barrel lengths, and gas system configurations—handy if you run everything from lightweight varmint rounds to full-power hunting loads, or if you plan to swap uppers later. The mil-spec 7075-T6 tube itself is built tough and proven reliable across countless builds.

This kit takes the guesswork out of gathering individual components. You get the tube, buffer, castle nut, and end plate in one box, so no hunting through catalogs or worrying whether parts are compatible. Installation is straightforward for anyone with basic AR-15 assembly knowledge, and the whole package supports any stock that accepts a standard mil-spec buffer tube. If recoil management and modularity matter to you, this is a solid foundation for a purpose-built rifle.

Key Features

• Complete kit includes buffer tube, recoil buffer, castle nut, and end plate—everything needed for stock assembly installation
• SRS multi-stage recoil buffer (3.3 oz) engineered to reduce recoil impulse
• Mil-spec 7075-T6 aluminum buffer tube with six adjustable positions for tuning to your load and setup
• Steel castle nut and end plate for reliable, secure assembly
• Compatible with standard mil-spec buffer tube stocks on AR-15 platforms

Specifications

Frequently Asked Questions

Will this SRS buffer kit fit my AR-15?

Yes, this kit is designed for AR-15 pattern firearms and uses a standard mil-spec buffer tube, so it will work with any lower receiver that accepts mil-spec components and any stock configured for a standard buffer tube.

What's the difference between the SRS Gen 4 buffer and a standard mil-spec buffer?

The SRS buffer is Armaspec's multi-stage recoil management system, weighing 3.3 ounces. It's engineered to reduce recoil impulse and provide smoother bolt carrier group travel compared to basic mil-spec buffers, though we recommend testing it with your specific load and barrel setup to confirm the tuning works best for you.

Can I adjust this buffer kit to suit different ammunition or barrel lengths?

Yes. The buffer tube has six adjustable positions that allow you to tune the system for different loads and configurations. This flexibility makes it useful if you're running varying ammunition types or planning to swap uppers with different barrel lengths.

What comes in the box?

The kit includes the SRS-C buffer, a 6-position mil-spec 7075-T6 aluminum buffer tube, a steel castle nut, and an end plate. You have everything needed to assemble and mount a stock on your lower receiver.