hey!
a very cool looking gun - nice and compact, sortof like the p90^^
youre doing a good job on the low poly-idea, though I think it would't hurt to smooth out the edges a bit more.. Though I can't really see from the screens howmany edges the screws have (where thee scope is attached and on the scope itself..) You might be able to save a handfull of polys there..
The rest is really cool-looking
I love the design with the handle, and the grip/mag area... (though the mag may not contain alot of bullets for an extended firefight
)
cheers!
oh p.s.: am I right in guessing from the render that you are using blender?