Not true.
You can legally increase OVERALL LENGTH (ie. >26") of the firearm by welding an extension etc onto the barrel.
You can't, however, legally increase the BARREL LENGTH (i.e. >18.5") in this way. Though, there is no minimum barrel length for a pump shotgun anyway.
Ive heard of some gray area here. I believe it had to do with them not giving LEO's a definitive way of measuring? Maybe someone who knows more can chime in. Or maybe its just a bit gray with threaded muzzles? I dunno...




















































