Why do they register its barrel lenght then ?
Surprise inspection? Like that has ever happened. Besides. You still have a cert for the gun. Nowhere on it does it say the barrel length. You have 30 days to notify of a change. What trouble could you possibly be in?
Check your certificate, barrel lenght is registered. Lower right case
Still have 30 days.
I'd be curious to see the 10.5" installed with the polymer handguard...