HOW COLT AR UPPERS COMPLETE CAN SAVE YOU TIME, STRESS, AND MONEY.

One of the modifications performed to enhance dependable feeding bundled maximizing the angle as well as the duration from the feed ramps. This USGI modification was completed to equally the barrel extension as well as the upper receiver, making a more time and steeper feed ramp.  It is a new upper receiver group, taken off an entire Colt rifle.