CFD International’s recently developed CFD-M3 Machine Gun was on display at the IDEX arms show last month. The CTD-M3, as the name suggests, is based on the AN/M3 aircraft machine gun design (a faster firing variant of the Browning M2). The ground/vehicle based version of the CFD-M3 fires at a rate of 1000 rpm, significantly more than the 600 rpm of the M2A1, while the aircraft version can fire at 1,100 rpm.
The ground version weighs 74.5 lbs and the aircraft version weighs 73.5 lbs.
Many thanks to Lionel for the info and photo.