CZ Kadet for 9x19/.40 frames. Also made as complete pistol.
EAA imports Tanfoglio conversions for Witness CZ clones, 1911s and ?
Ceiner has them for Browning HPs too now - sweet!
Kimber, of course, but only for 1911 single-stack, IIRC.
Numrich had some HK-made conversions for the G3/ HK 91 rifles. Ex WG military, I believe. Might work on a CETME, but I'm not sure.
I've seen adds for .22 AK trainers that were supposedly made for military use (as opposed to the Philipine look-alikes). SOG, I think.