IN my opinion, any skilled and knowledgeable firearms owner can find a better use for his time and money,
it's just wasted cash, most likely something you'll regret buying, a gimmick that's going to cost you wasted cash to buy then,
install and a much larger amount of wasted cash on ammo, that you used to do little more than make noise and piss away cash.
that and its going to get you thrown off of most gun ranges in minutes