Colt Model 639: MACVSOG's Vietnam Carbine
This video provides an expert-level review of the Colt Model 639, a select-fire carbine used by MACVSOG during the Vietnam War. Ian McCollum, a recognized firearms historian, details its development, unique features like the moderator, and historical significance. The entry highlights the rifle's rarity and regulatory considerations due to its NFA-classified muzzle device.











