That's what I want to do. Go out and buy a good duck gun, remove the chokes and shoot quail with it. Next day I'll go out and buy a great quail gun, install screw in chokes, and shoot steel shot at long range ducks with it. After spending hundreds of dollars in guns, shipping, insurance, and gunsmith bills, I have two guns that are worth quite a bit less than when I bought them. What's wrong with this picture? The weirder thing is that about 99% of Mike's customers have a half a dozen guns in the safe with the very chokes he is grinding into the customer's barrels. I'm sure there is something in Mike's quiver for me, but it isn't screw in choke installation or grinding metal out of my shotgun barrels.