Bought a CZ52 from Aim. The pistol had some problems. I called Chris from Aim and he said send it back. I did. They were willing to send me another CZ52. I asked if I could get credit towards another pistol and they agreed. Bottom line, these guys have GREAT CUSTOMER SERVICE! When you are dealing with fifty-year-old military surplus guns, you are bound to come across a defective pistol. But these guys made it right and I would not hesitate to do business with them again.