ENARM MSM Probably one of the best designs from Nelmo Suzano, taking from UZI and MAC-10 designs along with many original features. It Come with a collapsing stock, a 32-rounds magazine fitted inside the grip and two different frames, a "standard" one and another featuring an advanced gripping for better control during full-autofire. It was going to be a massive adoption for the Brazilian army and metropolitan polices, but only VERY FEW of those prototypes were made. ENARM was shut down due to lack of funds just when the MSM was being tested in the Brazilian Army's Testing Grounds.
Picture and information courtesy of: PIERANGELO TENDAS