THE FACT ABOUT 20 INCH COLT UPPER THAT NO ONE IS SUGGESTING

One of many modifications finished to improve reliable feeding involved maximizing the angle as well as the size on the feed ramps. This USGI modification was accomplished to both of those the barrel extension as well as upper receiver, making a longer and steeper feed ramp.Upgrading or purchasing a new AR-15? Then the 20 inch AR15 complete upper i