Preban uppers with post ban lower?

[muchocranium]

I purchased a Bushmaster while the assault riffle ban was on so i have the flat muzzle/no flashhider barrel. I was thinking of buying a new upper with a shorter barrel. Can i buy any upper like a 14 inch DPMS with the flash hider or is that illegal? Would the upper be a pre or post ban? Thanks

 

[rhgunguy]

If the flash hidder is permanently attached by welds then you can go with a shorter barrel as long as the overall barrel length is greater than 16". Just as a note there is no chemical bond strong enought to satisfy the ATF.

It would depend on when the upper was made as to if it is pre, during or post-ban.

You can put a new upper on a lower that was made during the ban. Since the ban sunset it is as if it never happened. Also, you can own all the Govt/LEO marked high-capacity mags that you want and they can not be taken away with a new ban, they would have to come up with new markings if they passed a new ban.