The M60 mattered less as a weapon than as a doctrinal decision. By merging the light and heavy machine gun roles into a single 7.62mm belt-fed gun carried at platoon level, the US Army committed to the German general-purpose concept it had studied since 1945 and abandoned the M1919/BAR split. That choice — sustained automatic fire organic to the infantry platoon, mountable on trucks, boats and helicopter doors — has outlasted the gun itself and still defines how Western infantry is organised.
Execution was weaker than the concept. The stamped receiver, fixed headspace, a gas piston that could be reassembled backwards, and a barrel change that moved the bipod and gas system with the barrel produced a weapon that armourers, rather than gunners, had to keep serviceable. Successive fixes — the lighter M60E3, then the more durable M60E4 and Mk 43 — narrowed the gap, but the 1990s Army trials that chose the FN MAG-derived M240 settled the argument on reliability grounds, and the M240 remains the US ground standard today.
The design has nonetheless proved unusually persistent. U.S. Ordnance keeps the line alive with the M60E6, adopted by Denmark in 2015 and still credible in endurance testing, and its 2-3 kg weight advantage over the M240B remains genuine for dismounted and special operations users. The US Army's 2024 contract for M60E4 and M60E6 guns and conversion kits — end user undisclosed — indicates continuing utility in security assistance and niche roles rather than any return to front-line US service.
