There's four colors/shades that I see. "Coyote" on the barreled action and a mix of "coyote", green, brown, and fde/tan on the stock.
In rattle can form I'd use Rustoleum Nutmeg on the barreled action as mentioned above. On the stock, I'd use Rustoleum Camo Earth Brown, Khaki, and Deep Forest Green with spritzes of Nutmeg. Then finish the whole thing off with several coats of matte clear.