Nice for a start.
You´ve got a Mesh error in the yellow part. I guess you want the yellow thing to be faceted but on one of the riffle thingies, the things that give the wielder a better grip you can see a couple of triangles. Wrong smoothing groups?
There´s a problem with the glow as well. The green part is cut off by the purple part of the grip. But the white bright part of the glow is not.
Also, the glow is too rectangular. In the front it looks like the gradient ends in a rectangular shape.
On the grip: It looks like the red button has chamfered corners, which is fine. But it ´s strange that the yellow part is not chamfered and has these really hard edges.
Might be a perspective thing but in these renderings the red button looks like it´s not centered on the dark gray thing which is the base of the button.
Also, it allways helps, even if you haven´t done the shaders yet to give the objects halfways decent colors. These ones are horrible.
![Razz :P](./images/smilies/icon_razz.gif)
If there´s nothing else, different shades of gray is allways an option.
If you keep working on it it will turn out to be pretty cool.