Can someone help me settle an argument. What is the proper use of the hand-stop grip on a rifle?
A) use it a the front of a long rail over a short barrel, so as to stop your hand from slipping forward off said rail and in front of muzzle.
B) use it as a reference point and rearwards pressure for your hand, should you use the thumb over bore/c clamp/costa style of shooting.
If that's what you call a fore grip or gangster grip, I can only repeat what Bro Jangles and Trunk Monkey said.
In the past couple of years I got into the habit of using the hand over barrel grip (whatever it's called - Chris Costa beard grip?) and I found it to be remarkably effective in driving a rifle, absorbing recoil and minimizing muzzle flip, returning to target, and engaging targets quickly. It looks goofy, but it works. I like regular vertical grips like KAV over the angled Magpul grip, simply because the Magpul grip takes up so much rail space. My ideal would probably be one of the short Tango Down fore grips, but I'm not one to spend money every time a new product comes to market.
They make hand stops such as this that take up no space compared to a fore grip,