Sorry to hear of your injuries. Hoping you have a full recovery and without any serious complications. Back injuries are tough to recover from, so take it easy for a while.
Sorry to be so uneducated about gun laws, I'm new, and trying to learn as much as possible as quickly as I can, and you all have been very helpful--thank you--, but why does a collapsible stock make a difference??. If it's made by Benelli for an M4, why is that different than the standard pistol grip stock, as far as number of imported parts is concerned; or is there another factor involved?