Hmm, is this going to be over a background?
Few things I'm seeing:
First off I'm always hesitant to use a completely solid black, but if that your intentional style, all the power to you.
...The dimensions seem a bit off, but again the context is important. If this is going to be in game and the range of this weapon needs to be reduced, you can always fudge it a little. Lastly, I'm concerned about the chain-- not only does it feel more like a zipper instead of a chain, but it looks like they lose shape around the curve, making a square-like notch cut out of it.
Reference pics are underrated. I've found them to be invaluable at times, even though it might seem like more work.
