Gun Control & RKBA

...NO utility in installing these modifications other than making these guns more deadly."

I addressed neither bump fire devices nor trigger cranks. However, are you 100% certain that there is no sporting competition, where one of these devices is permitted, where the winner is determined by the number on target rounds he fires within a set time?

Should such a suit move forward and if there is no such competition, I feel rather certain that the manufacturers may sponsor one simply to homulgate their product type.

Call names if it makes you feel better but I was mostly addressing firearm manufactures and dealers.