NOT KNOWN DETAILS ABOUT COLT M16 UPPER FOR SALE WASHIGTON

One of the modifications done to improve trusted feeding involved maximizing the angle and the size with the feed ramps. This USGI modification was finished to the two the barrel extension plus the upper receiver, making a longer and steeper feed ramp.Upgrading or buying a new AR-15? Then the 20 inch AR15 complete upper is essential-have that deliv