"The sequence from MG 42 to MG 3 is:
MG 42 used by the new Bundeswehr from 57 into early 60s.
MG 42/59 was the reverse engineered MG 42 - in 8MM - put into service in very late 59 to replace aging MG 42s. The MG 42/59s were later converted to 7.62 x 51 NATO before being phased out and are then designated,
MG 1 which is always in NATO 7.62 x 51 cal.
There was a short lived 7.62 x 51 cal MG 2, but it wasn't widely adopted and was quickly superseded by the,
MG 3 which is an improved MG 2 .
The most notable difference is the flash hider. The MG 3 has a variable rate of fire - depending on the bolt and buffer combination - of from 700 to 1500 rpm.
Since the MG 3 came into service about 25 years ago, I seriously doubt there are any MG 42/59s or MG 1s still in service in the Bundeswehr.
This sounds logical; any comments?
Edit: moved to stickies , paragraphs added to make easier to read, colorized, spell checked, and info updated .
