AR-9 jamming rounds

[Nicu757]

All I know is I built a QC10 lower glock mag SBR. The BA 5.5 barrel would not feed just like the first pictures in this post. I got a QC10 barell and it's been flawless for over 1k rounds with all different bullet types and magizines. I'm sure there are other ways to build a AR9 all i know is mine works like a sewing machine and would even use it to protect myself and family hands down. The BA barrel is collecting dust. It maybe sold to a fellow INGO member if we can ever hook up. I just know what worked on my build. I used a MVB industries collapsible stock with there spring and weight and could not be happier. Once my GM-9 gets out of jail.... on to 9 months now I'll give you all a update on how she works suppressed.

 

[Nicu757]

BA maybe has this issue fixed I bought my barrel from them as soon as they came out last year.