[absolootezer0]

there is in fact a class 3ffl (dealer)
if you hold one you may get a new manufacture weapon (for demonstration to gov't agency purpose only)
a class 3ffl may apply to register a dewat.

[ctdonath2]

As a dealer, not common citizen. It doesn't cost $4000, and all the ensuing compliance costs push it much higher - IF you can even get one. Even then, it doesn't help much unless you're talking large volume, as you're stuck with pre-'86 stuff unless you can get cozy (i.e.: demonstrate need via department letterhead) with military or police.