Nice use of color pencil. The face and the details of the clothes are very well done. Especially on the boots.
I like the little ridges you added there. But there is one thing that bothers me and it's the proportion of the arm on the right side of the pic. The arm is way too short. Given the pose, the hand should be "just" at the crotch (maybe a little bit below) Other than that, it's a good pic. You even did a really good job fore-shortening the arm on the left side.
Btw, you get kudos for drawing the mag also. I always try to work a mag into the pic because they really are an important part of your character, like it or not
They can easily be the difference in making it through a boss fight or equiping that awesome rare.
Btw, did you ink this image at all or was this pencil? I'm curious about the extremely thin lines you've used.