Hello, I'm looking for a title to a 80's action movie. It's basically a low budget action, where a squad of marine are sent to fight an army of humanoid robots. I remember the title as being an abbreviation (something like S.P.I.M. but definitely not precisely this). One of the most prominent scenes I recall is that of a marine disabling one of the robots. As the machine stops moving and shooting a small CD tray is lowered from its stomach area (probably containing its software, but who cares) and the marine replaces the CD with a music disc. Afterward the machine tries to read the disk and explodes... Any help finding it? Would bring back a lot of childhood memories...

A.P.E.X. (1994) (http://www.imdb.com/title/tt0109144/)

A.P.E.X. (1994) (http://www.imdb.com/title/tt0109144/)

2 and a half years later - THANK YOU! Thank you very, very much! ;)