As a complete aside, early in my army career as a tanker we were still drawing the M3 as the M4 wasn't fully fielded yet. Once a year we'd take them to the range and conduct a fire for familiarization. They were fun but eventually you get tired of loading magazines and policing brass. Still, it would be neat to have one if someone else would foot the bill for the ammo (which is kinda my general feeling toward all transferable MGs)