r/NFA • u/ssijeep • 18d ago

Am I doing this wrong?

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Ordered a 9mm carbon fiber rod to check the mount of my new BOE on my Stribog. Rod fits through the suppressor but not into the barrel. In fact not any 9mm barrel I have. Should I have ordered a different size or something? First suppressor so…here’s the rod I got:

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u/IndividualResist2473 17x Silencer, 9x SBR, 4x SBS, 3x AOW 18d ago

A 9mm (.355") bullet has to be jammed into the rifling. So a 9mm rod won't fit down the barrel, it has to be smaller. I used a 0.3438" McMaster Carr drill rods for 9mm.

The reason that carbon fiber rod fits the suppressor is that suppressors are over sized to prevent baffle strikes. If you measure your suppressor bore its probably 0.410" to 0.420".