I would take the wood off the gun, rather than try a single product to remove all the paint. If it is latex paint, you can soak the metal in alcohol for a day and it usually will remove it. There is also a product called "oops" and one called "goof off" that will desolve latex. You should not have a problem using commercial paint strippers on the wood, but I would hesitate to try it on the metal parts without some experimenting in some small area not visible as it might harm the blueing or etch the metal. I would also remove the butt plate or recoil pad before trying a commercial cleaner on the wood. Best of luck with your project.