Actually if you buy the CAA Roni kit and slap your favorite pistol in there you have made a SBR and are subject to NFA rules. The mech tech kit makes a rifle, but not a short barrel rifle. No NFA issues.
not to highjack the thread for for a long time CAA made a civilian compliant RONI that had a 16 inch barrel.
ignore my complete lack of capitalization. I still have no problem correcting your grammar.
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