This is the MP40 (Maschinenpistole 40), a german submachine gun from WW2.
It is not exactly to scale, but it is very close. It is shorter than a scale version, and it lacks the trademark cylinder foresight of the real gun. I couldn't mold it successfulyly, :(
I designed it in a CAD program, and had an ABS plastic injection mold made. The mold can produce these in ABS plastic - just like Lego does.
HEY WILL! I didn't know you had a MOCPAGES site! Oh, and I finished your Brickarms movie. I just got a MXL 990 Mic and still need to do the voices. I'f you'd like to see some of my creations, you can click on the link above. One thing I think you should sell is a sound effects CD of all the guns. I have the sounds, I could E-Mail them to you, or send you the discs. I got a Lightscribe DVD burner so I could make them pretty cool! I also have a few pics I'd like you to post on your site. And this is a awesome MP40 I own 15 of them and use them all the time! Luke