So after playing with it and against it, the thing is way overpowered with a good gungineer.
Right now, this gun does too many jobs well AND has the range. It disrupts movement and can wreck components, and has o.k. armor strip. I think muse needs to choose one role to focus on for this gun, and I think the accuracy or the delay or heavy clip has to be looked at to diminish this guns effectiveness at range, while still making it a useful tool to have.
My recommendations are to
A) Reduce the shatter damage (make it 2 shots buffed+heavy to disable a component)
B) Nerf Heavy Clip to decrease effectiveness at range.
C) Reduce Projectile speed (slightly)
D) Perhaps increase the "push" slightly to compensate for the reduced shatter.
By not touching the range of the weapon, this weapon's niche is still safe, and it still maintains it's effectiveness by throwing off an enemy's path as they close. The gun gets better as they get close, but still is useful to harass at range--a good utility weapon that's useful in most all situations.