I'm thinking about planning a "plinking" backpacking trip with a few buddies this the summer, somewhere around Prineville. I was figuring that I would take a pistol or two, but I had an idea in the shower... Maybe I buy a Ruger Charger, then delete the bipod (for weight reduction), buy a lightweight barrel and add iron sites (no optic, to save space and weight), and swap the stock for a lightweight poly side/under folder. So I did a little searching for shoulder-stocks built for Ruger Chargers, and found nothing but forum posts declaring that shoulder stocks are illegal for pistols. And of course, I saw no shoulder stocks for Chargers. But... I see ads for shoulder stock conversions for various pistols, like this for Glocks. And this. So, do I have to add a barrel of a certain length before should-stocking? Is there a minimum or maximum length law for this type of project? Does the stock need to attach in a certain way? If I have to attach a 16" barrel first, then I suppose this project is a bust - no reason to buy a charger to do what I could with a 10/22. or/also: Where do I find the federal and state laws that could provide an answer?