Compact and to the point of control - Command Arms Accessories 3 & 5 Position Folding Forearm Grips

I purchased it for a Kel Tec Sub 2k and it's perfect, given how compact it is and allows for great concealment. I'm considering it for other subs, even a shotgun...just right for control that doesn't get in the way.
Pros: Conceals well when folded
Cons: Requires a 5-pictinny setup

This review was written in the old system and had content requirements that are different than reviews written today.