So I have a Scorpion and have not had any issues to date but haven't shot it that much yet either. I like the AR platform though and have several and also several different caliber uppers. But I don't have one that will shoot 9mm. Was wondering what people that use and/or have a 9mm capable AR would recommend for someone like me that wants to have a Glock mag capable one. I wouldn't have an issue dedicating one of my lowers and putting in a different buffer and mag adapter if that is necessary to save on costs. Just want it to be reliable, not worried about LRHO either. Also not looking for the most expensive products or methods of getting one of these going. Thinking 8" or 10" barrel as I have read that longer will be slowing down the bullet before it even leaves the barrel. Now if that is not the case then a 16" would be my choice because of less noise when shot. Anybody have suggestions?