The M4 an is air-cooled, direct impingement gas-operated, magazine-fed infantry carbine. It has a 14.5 inch (370 mm) barrel and a telescoping stock. The M4 carbine is heavily used by the United States Armed Forces, and has replaced the M16 rifle in most United States Army and United ...
The M4 an is air-cooled, direct impingement gas-operated, magazine-fed infantry carbine. It has a 14.5 inch (370 mm) barrel and a telescoping stock. The M4 carbine is heavily used by the United States Armed Forces, and has replaced the M16 rifle in most United States Army and United ...