Definite yeah.
Long as you have mags you should be good. I got an Adams Arms piston upper to keep the corrosive salts out of the gas system.
Never really shot it for accuracy, more of a blaster back when 5.45 was 10cent/rd.
Does your department have any rules against posting images of you online in uniform, etc.
I get that they don't want their "name" besmirched in any way but maybe you can play the /legal/ angle?
Hate it for you!