A friend of mine has one on an SKS with a 30 round clip.
He will fold the bayonet down and stick it in the ground
as a monopod and he gets incredible results with it.
Kind of a poor man's gattling gun. he has a problem with ferral
dogs and he will open up on them with it from the back door
of his barn. I know this is extreme but he has a blast doing it.
I have never done it but it is a hoot to watch when he gets
after them..... Reminds me of R. Lee from the show mail call....Yelling,
Hoo-Ya' ---Get some ----Get some--as he shoots at them.
And yes, he is a Marine too.
They are not very practical but he has a great deal of fun with it.
He does not leave it on the rifle, it is dangerous from the perspective that
it makes it very easy to inadvertantly pull the trigger.