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AC4NA: Pneumatic Recoil Buffer - Non-Adjustable

Quick Overview

Replace the antiquated spring and weight recoil in your AR-15 with our AC4NA Pneumatic Recoil Buffer to improve overall feel and performance.

Availability: Available (built to order)



The AC4 pneumatic recoil buffer replaces the spring and weight buffer which are
standard in today’s AR-15 models. The AC4NA will provide a smoother recoil, softer
recoil feel, reduced muzzle climb, and totally eliminates that detracting spring
noise. Customers often comment on an overall improvement of function and reliability when they
switched to our AC4NA pneumatic recoil buffer.

The AC4NA is gas-charged so there will be no messy leaks, common with similar
hydraulic products. Testing in extreme temperatures, hot and cold, showed
the AC4NA pneumatic recoil buffer to be effective in many different types of

The AC4NA pneumatic recoil buffers ONLY FIT A2 buttstocks and buttstocks that
use a full length receiver extension tube. The AC4NA does NOT FIT in ANY
standard collapsible stock receiver extension tubes.

This non-adjustable buffer replaces the spring and weight recoil system in an A2 buttstock. 

This model is designed for use with .223 Remington / 5.56 NATO AR-15 rifles and carbines.


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Olympic Arms, Inc. is not affiliated with the IOC/USOC or any other Olympic sports organization.