I was recently speaking to a local gunsmith who showed me his PDW which was a custom-built AR-15 sporting a Magpul UBR and 8" barrel which he had legally registered as a SBR (short-barrelled rifle) and carried his $200 tax stamp. Now, in some states (my state of Ohio included), when you have a CCW, you can carry a loaded pistol in your car, but ALL long guns must be transported unloaded, with the ammo secured separately, making it hard on people that believe "A pistol is only used to get you to a REAL weapon." So this gunsmith points out that the rear of the UBR can be completely removed, leaving only the buffer tube and the cheek weld that is fastened to the top of the buffer tube. In our state, that 8" barrel and no buttstock qualifies the converted weapon legally as a "pistol." So, it is his claim that the buttstock-less weapon can be legally carried in a vehicle, loaded, the same as any other CCW-legal "pistol." I know we can carry the ARs manufactured as pistols in our vehicles, but those are registered as pistols. My question is: Does removing the rear of the stock, leaving the buffer tube, legally make this a pistol capable of being carried in a vehicle, even though its tax stamp reads "Short-barrelled Rifle?" Or is this poking around for a 7-year term at Leavenworth, KS? It sounded a little risky and I was hoping someone familiar with NFA regs could give an informed opinion.