I think it’s been said above, but I would strip it and clean it. Then put about 100 rounds through it. That way you can make sure it is broken in. If the issue persists past 100 rounds I would be very concerned. Being used and a carry gun I would want to take it down and clean it since many people don’t vet or brake in their carry gun, nor do they fully clean them. If the issue is still there I would call Steyr for maintenance but it sounds like this might be maintenance/ brake in issue from the previous owner.