I just picked up this PC9 from a local guy with one mag and 3 boxes of ammo. I never see these around so I just couldnt pass it up. Dont know if I will end up keeping it or if it will go in my trading stock. I will have to take it out and play with it first! Does anyone have experience with these? How do they shoot? Would it be worth putting an optic or red dot on the gun? What are your thoughts?