well gee, ain't that helpful criticism?
here i'll give some
it might look a bit better if u smoothed out the barrel a little, maybe try using hexagonal or octagonal prisms instead of rectangular. and the trigger guard doesn't need to come to a 90 degree angle, it could be a bit more slanted
i like the way u did the calculator and screen and the wiring though! although, maybe the gun's slightly too big for them. they seem a bit too small in comparison