This non-adjustable buffer will replace the spring and weight recoil system in an A2 buttstock. This model is designed for use with .223 / 5.56 NATO AR-15 rifles and carbines.
Note: The AC4 will NOT function in AR-15 rifles or carbines with collapsible stocks. The AC4 will only function in A2 buttstocks and buttstocks with full length extension tubes. |
