Browning MK II
Introduced in September 1935
Feed: 250 round metal link
Calibre: .303 inch
Cyclic rate: 1150 rpm
Muzzle Velocity: 2,660 ft/sec
Length: 44.5 inches (1.13 m)
Weight: 21.9 lbs. (9.9 kg)
Range: Effective 4-500 yards

Browning M2
Introduced in       
Feed: 110 round metal link
Calibre: .5 inch
Cyclic rate: 750-850 rpm
Length: 56 inches (1.42 m)
Weight: 64 lbs. (27 kg)
Range: Effective 2000 yards.