THE BASIC PRINCIPLES OF COLT AR 15 UPPERS

The present-day M16/M4 rifle is developed around the strategy of modularity. All of the BCM® flat best uppers function a USGI variety laser etched T-marks to offer addressing with the remounting of tactical accessories including optics, laser sights, etcetera.Precision taking pictures is an additional persuasive basis for the AR 15 20 inch upper,