Product Description
13.9" pre-ban M-4A1 SOCOM profile with a 1x7 twist, 4150 11595E Steel with Chrome Lining. The FSB is attached with taper pins after coating. These are the same heavy profile as the current issue with the M203 flats. Always have a competent gunsmith assemble your barrel or rifle kit and headspace your barrel before first use. Using a rifle put together incorrectly or assembled using incorrect or modified parts can result in a damaged rifle, personal injury, death, or damage to property.
