These pictures are probably too blurry to get a proper identification, but it's the best my digital camera can do. I thought it might be a RAC pistol...but I don't know. The casting doesn't seem to be up to his quality.
Does the bolt action work at all? I have seen some RAC recasts that reproduce the entire main gun as one piece. The loss of detail on the bottom of the ammo clip also points towards a recast.
If it is, it's definitely an older model as the bottom butt-plate doesn't have the pinky finger indentation and the screw for the vertical ammo clip post isn't a hex screw.
It's a solid resin cast. The only thing that moves are the triggers and the ammo clip.
I forgot to mention it has working lights that can be activated by sticking a pin in a small hole behind the ammo clip. This is what lead me to believe it might be a RAC.