As a gunstore owner and gunsmith I must disagree with your post. There are MANY shotguns with pistol grips that are configured for hunting. They have full length buttstocks and pistol grips. The pistol grip reduces felt recoil by distributing recoil against more surface and makes the shotgun more controllable for a second shot which is particularly helpful when turkey hunting, etc. I am old school and do not use a pistol gripped shotgun, but power to those who do.
However, when I was a younger man, and a member of an entry team, I did carry a shotgun with a pistol grip.
If I understand correctly, it's the guns with ONLY a pistol grip and no stock ATF is making this [moronic] ruling about.
Sorry, I should have been more clear.
I was thinking of a pistol grip shotgun in the pure sense of that. Pistol grip forend and another pistol grip at the trigger cage, with an overall length a few inches longer than the steel of the barrel and receiver.
As a gun dealer you know the stuff that you can get from Cheaper than Dirt.
The Command Arms picatinny systems for the Rem 870 are nice and are very effective.