Should be fine if OAL is 27". Mossberg makes a 14.5" barreled pistol grip 500 that can be had with a birdhead grip. It's 26.5" OAL and doesn't require a stamp. Considered a "firearm" not a shotgun since it never had a butt stock on it.
Edited by TexFlip (07/27/15 06:19 AM)