Colt M4 Data Rights, the M4 Product Improvement Program, and the Failed Individual Carbine Competition

Contrary to popular misconception, the US Department of Defense (DOD) does not own the technical data package (TDP) for either the M4 carbine or its parent, the M16 rifle. In June 1967, in its role as the DOD’s designated procurement agency, the US Army purchased a license from Colt for the TDP and the rightsContinue reading “Colt M4 Data Rights, the M4 Product Improvement Program, and the Failed Individual Carbine Competition”

Unertl Tube Sight

Not an optic. The tube sight is for iron sight use. It functions as the rear sight but has the optical scope mounts.