Atreides,
I believe in trying before you buy the expensive stuff. I had a VFG that was used to
hold on the barrel shrouds for HK-94's. It was way too far forward on the 94. I
eventually put it in the rear hole of my lower handguard on my car. It hasn't been taken
off yet. I also have ran across similar handles for large drills. If you have something
like this laying around, or run across one in the hardware store, this could be an
inexpensive way to try this out. Somebody commented that I would break the HG,
if it does break, they are cheap to replace, & I might consider upgrading at that
time. So far, so good.
I think it is much more comfortable & it allows you to manuever the gun when
picking it up, shouldering from the sling, etc. The VFG is near the center of gravity
(if you put it near the magwell), which makes it easy move the gun around.
I have no problem using it from prone. You can also move your hand forward
to a conventional grip on the HG, if desired.
I don't intend to put put one on my 20" guns, but I have them on all of my
cars. I'll never go back.
Good Luck,
Johnny C!