I'm using Camo Form, made by McNett. I bought it from Wing Supply, on sale it was about $3.00 per roll. One roll is supposed to be enough to cover one rifle. It is 2" wide and 144" long. It is a heavy duty self-cling wrap that sticks to itself, not the gun. It has been on my rifle for over a year now and it is just as tight as the day I put it on. A strand or two might have unravelled for an inch or so, but just cut it off. That has not been a problem for me.
It is available in six patterns but I think WingSupply only offered it in ARMY Digital.
I ordered two rolls and I wish I'd bought more. The cheap price worried me, but IMO this wrap is VERY good. It is removable and reusable.
Update..I just checked WS, they don't have the digital pattern in the clearance section any longer, guess they sold out. I knew I should have ordered more! It's now $13.00 for other patterns. You might find it cheaper somewhere else.