The LEDs look a bit silly. Replace them with a LCD screen with a bright blue backlight and some technical gibberish it'd look much cooler! Example:
Oh that looks a bit weak for a hmg and the capacity is .... 20 bullets? Or is this the heavy rifle as BECAR replacement? then it lacks a front hand grip maybe
Scope on a shotgun. Wat. Technical gibberish on a shotgun. Wat. (shotguns are FREAKING EASY to use) Looks like a rifle. WTF!?