The CETME Ameli is a very interesting and cool machinegun which could have been quite a lot better than it ended up being, if not for cost cutting and bad manufacturing (apparently many parts will not interchange freely). Probably it would have been pretty successful if executed right, because the concept is ironclad.
Mexico and Malaysia bought some of these guns, but who knows if they use them at all anymore, probably not given their problems.
The gun has this late Cold War charm to it which I like, akin to the Stoner 63 / Mk.23 Mod. 0
Video showing one firing:
https://www.youtube.com/watch?v=h8LcS1J31es 