Okay, let me test your vast knowledge once again, as there is one other movie I've been trying to find for years now. It's 80s scifi horror with a good deal of gore.
It plays at first on earth, where astronauts brought back something from the moon. Turns out it's some sort of evil robot that uses machine and computer parts along with human parts to build itself up into a killing machine. The soldiers there barely manage to bring it down. Later it plays on the moon when astronauts enter an old alien ruin and encounter more of those things.