Use Duracoat on the stock yourself. Yes you can sponge Duracoat, or brush it, or spray it. Less than $150 for stripper, several colors, spray kit from Home Depot, and Duracoat clear coat. WAY better than Krylon.
Here, I ordered liquid matte black, white, and clear. First I sprayed the stock a base coat black and hit a few small metal pieces with black (sling studs, action screws, trigger shoe, magazine release etc). Then I mixed B&W to get greys and sponged them on in several overlapping layers. Finally I sprayed the whole stock in matte clear, probably not necessary. It's VERY durable, totally unaffected by solvents, sun screen, etc.
I had the action, scope rail, bolt, trigger guard etc professionally Cerekoted tungsten grey.