I know theese might not be the most awsome, but here we go:
- It has an easily traceable laser.
- 50 % less damage.
- It has recoil when firing.

+ 25 % faster firing speed.
+ The laser will be able to detect cloaked spies when pointing at them.
+ You will be able to fire and stay in the sight at all times.
+ 25 % faster moving speed while scoped.

Just an idea, i think its pretty good. :)