It simply received a mvg and said it was ergonomically designed to be used as a conventional grip or with a thumb break methodology. adapted to the domain
Thumb break methodology
It’s a bit complicated to explain. Take a look at this hyperlink first:
http://www.thefirearblog. com/weblog/wp-content/uplo…
Instead of wrapping the vertical handle in the palm of your hand, you relax your hand before the handle itself. You relax the meaty part of your palm as opposed to the foregrip, but the rest of your fingers hold the weapon itself.