MSR Pistol Designation In Doubt?

[StoneHendge]

I also heard that pistol ammo must be straight walled cases and pistols that need a two handed hold to shoot or use a bipod are not handguns. That means the 500 S&W and T/C Contenders could be classified as AOWs or SBRs.

Mopar Doctor

That would also make a 13 ounce 1.875" barreled S&W .357 Airweight an SBR