Mil-Spec AR-15 Buffer Tubes
222 products · page 1 of 8
A mil-spec buffer tube measures about 1.148 inches across, and most aftermarket collapsible stocks are made for it. Commercial tubes are slightly fatter (about 1.168 inches), so a mil-spec stock won't fit them. These tubes are all mil-spec diameter; most use the standard carbine buffer and spring.
Compare mil-spec buffer tubes from every store we track, and see our mil-spec vs commercial guide.
