Here's a little report after half painting done.
I started with some coats of BIN SHELLAC BASE PRIMER-SEALER. There might be better stuff but from my research, this was the best product to seal the stock and have a good base coat.
I don't know if the product was old and sat on the shelves (bought the day before use..) but it was the most horrible experience of spray painting I've ever had. Tho rattle cans don't make especially good jobs, I usually get away with more than decent jobs with it, have painted tons of projects and car trims and never had such a hard time. The B-I-N primer nozzle doesn't seem appropriate and the stuff itself is pretty thick but the way it spray makes it impossible to do even, proper light coats. The thing was spitting primer heavily and I ended up with it running all over the stock... Had to wait, sand down and re apply very very light coats. The result wasn't great looking but the wood is now sealed and the good part is, even if it wasn't good looking, the textured finish is going to hide the imperfections.
Sorry, didn't take pictures of the stock with only primer. It was simply all white and like I said, looked like a pretty bad paint job.
Then I went on and taped all the spots I didn't want texture on, mostly where the moving parts (mag well, bolt handle channel, safety...). And gave a few light coats of Rust-o-leum Accents Stone textured finish paint. This stuff also spit the paint out but on this one, this is pretty much what you want to get good texture. The stuff looks a lot like rocker guard/bed liner spray but without the smell and dries hard instead of keeping a rubberish feel. I realized you can't really give the entire finish with it as it leaves a lot of space between spits (you will see in the pictures). You could do all of it with it but it would take for ever as it really dries slow and would need so many coats, and the finish would be super thick and way too much texture. This was not a problem in my case as I already planned to put a flat black finish coat on the entire thing to get it nice and even and, of course, cover the parts that were taped off.
Here's what it looks like, still hanging to dry. The Accents Stone paint really takes a long time to dry.
