Talk:GIAT M693

What came first?

Does anybody know what cannon came first, the GIAT M621 or the GIAT M693? The number would suggest the M621, however most of the stuff I have been able to find suggests that the M621 was developed as a lightweight, low recoil version for mounting on helicopters and smaller ships. --commando552 (talk) 05:09, 28 September 2013 (EDT)

M621 is produced since 1973 or 1974, while M693 is used on AMX-10P which is produced from 1972. So it looks like both models were created around the same time. Greg-Z (talk) 05:28, 28 September 2013 (EDT)