EVERYTHING ABOUT AR 15 UPPERS COMPLETE 20 INCH BARREL A2 COLT

The present-day M16/M4 rifle is developed around the strategy of modularity. All the BCM® flat prime uppers aspect a USGI type laser etched T-marks to provide addressing to the remounting of tactical components such as optics, laser sights, and so on.Upgrading or buying a new AR-fifteen? Then the twenty inch AR15 complete upper is essential-have t