Rifle: Early Geissele URGI near clone with 14.5 DD barrel. The rifle was using carbine buffer. I was using IMI 77 gr razor core ammo. Surefire SOCOM Gen 2 suppressor.
Without suppressor - normal function.
With suppressor: brass ejected at ~ 2 o'clock, failure to lock on empty magazine (happened twice). This seems strange as a suppressor should help with gas pressure. What could be causing this issue? I experienced no issues with this rifle and different ammo.
I also realized that I was using OK 20 round magazine. I didn't have a chance to try it with 30 rounders. Could this magazine also have an effect ?
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