Your images are broken, unfortunately!
Your gun looks really good but I personally think that it's a little too big for your hand.
While it seems that your finger sits relatively comfortably on the trigger of the gun, it stills looks way
out of proportion with your hand, especially in the second picture.
All of your detailing looks really good and you painted the gun very well so I think the only criticism I can give is about the proportion of the gun to your hand.
You may want to scale it down a bit if you choose to make another gun!