This thing is a tank. It's solid, hefty, and somewhat heavy. Honestly, this thing is strong enough to be used as a weapon by itself. It's even got ridges on the bottom like those tactical flashlights
Don't let the pictures deceive you: it's not a tiny stub grip. It's just really fat. About as long as a normal grip as well.
It's got an internal storage compartment, but it doesn't seem sized to fit anything reasonable. It's got a lot of space, but it can only fit a single CR123A and has a lot of room left over because of the compartment's shape, so it rattles around all the time.
It attaches to rails really well and has a QD screw that's easy to use. Fits 1" rails.
All in all fantastic, though the compartment could be improved.
Has an internal compartment with foam padding
Compartment is really strangely sized
Can be a bit wide for some people's hands.