I have never heard of a range that let you do that, so I'm going to go with no. They are a business not a charity.
So I finally got out to FreeState to try out my Bumpfire stock on my Del-Ton AR-15. I must say it sure was fun double tapping and triple tapping some rounds into the paper.
I expected the AR to rise as I shot in bumpfire mode. Shooting 2 and 3 bullet magazine loads made it pretty easy to stay on the paper. Surprisingly, my last 2 triples hit within a 5 inch group at 25 yards. Surprising, because I'm not usually much better than that when shooting single shots standing offhand.