eff10mm

My STI 45 mag lips were generally to narrow. I did have one or two that were too wide. The followers like to come up too high in the magazine as well. I have recently switched over to all grams guts with TTI pads. That has made a significant improvement. the factory mags just don't run as smoothly as the MBX. I'm sure if I spent several hours polishing the internals the STI tubes could be acceptable. Sent from my iPhone using Tapatalk

All of my ST I magazines had feed lips that were all over the place. They were poorly sized and I had trouble getting anywhere near 12 rounds in most of them. I eventually was able to tune them all but it took a lot of work and they just don't feel as nice as the MBX magazines I have since started switching over to. Sent from my iPhone using Tapatalk

I have all a 9mm Lite DS Tac4.0, a .40 S&W DS Tac4.0 and .45 5" DS custom. I never had much luck getting my 45 to run properly until I started buying MBX magazines. MBX gave me the capacity the gun should have had from STI in the first place. The 40 never ran real well with factory length loads. It only really shined when the bullets were seated out. This presents a problem when you want to run factory defensive ammunition. Sent from my iPhone using Tapatalk

I would do two guns if we can get another batch going .