Just found this!HerbM wrote:Yes the legal one cost $700 plus $5 for the transfer tax stamp.
The illegal one is initially quite a bit cheaper but the legal fees, fines and time in prison will eventually (30 seconds or so?) outweigh the costs of the other.
http://www.shotgunworld.com/bbs/viewtopic.php?t=80131
If you do the paperwork 1st...you can then legally hack the snot outta your shotgun barrel legally...gotta have done the tapdance of the ATF 1st