I have tiger striped or painted a ton of stuff.
I have done AR's, shotguns, sheaths, knives, 'hawks, etc. It turns out well enough that other people are constantly asking me to paint theirs.
It is pretty easy, just takes patience. Most people who have 'helped' me cannot get their head around the drying time between coats.
I use krylon military paint, which I got at Walmart.