Ranking
Atleast you said you didn't make the gun.

but 5/10 nonetheless, the pose is way off, seeing that noone holds an assault rifle like that.
Ur some problems : the gun is to bright and the tori is to dark....that may be crucial for an image so 8/10
Centuries Of Damn
4/10

The gun is going through his hand.
The gun looks out of place.
......It's a little too big
......It's way too bright
The pose is awkward

Hope you don't take that critique the wrong way, just giving you some tips for the future.