The general Electric M197 is a lightweight three-barrelled variant of the M61A1 Vulcan 20 mm cannon optimised for fitting to helicopters. It has a rate of fire variable between 400 and 3000 rounds per minute and a muzzle velocity of 1030 metres per second.
Found on
http://www.probertencyclopaedia.com/browse/FYM.HTM
The general Electric M197 is a three-barrelled variant of the M61A1 cannon optimised for fitting to helicopters. It has a rate of fire variable between 400 and 3000 rounds per minute and a muzzle velocity of 1030 metres per second.
Found on
http://www.probertencyclopaedia.com/browse/IM.HTM
No exact match found.
