I have one and it cycles cheap ammo fine until it gets dirty, usually about eighty rounds. The gun's purpose is to serve as a training weapon for a full size Sig. Same controls and field strip routine. It was never intended to operate smoothly like a Ruger. One example is the sights. They are horrible. Another is the double action trigger pull. It is also horrible. A Mark II is in a whole different class. If you want a 22 that mimics the manual of arms of a full size Sig buy the Mosquito. If you want something accurate, reliable, etc, etc. buy a Mark II.