Q: Would this be considered an angled grip, or a vertical grip? I want to put one on an AR pistol, but I want to be sure I won't be making it an SBR if I do so.
A: Hi Austin,
You should be fine to add that to your pistol. What matters most as far as compliance are things like your stock choice, break action configuration, etc.
Hope this helps.
-The Rifle Supply Team