During a battle between the Predator and the Aliens the Predator's shoulder cannons are damaged. As a result he modifies one into a hand-held blaster. In the final battle Dallas ends up with the blaster before it is taken off him by the special forces when the helicopter crashes.
The Predator's blaster cannon is presented by Colonel Stevens to a Ms. Yutani in what i think is the last scene of the film. I think she says something about earth/humans not being ready for this technology yet.
So what happens to the blaster after this?