You may have seen my garage sale thread on the general firearms forum. I bought a H&R 12 ga Topper for $17 over the weekend, but it was missing the butt stock. Kind of got me thinking about what to do with it and I started looking around on the internet for ideas. Never really thought about it before but I was frankly kind of surprised how versatile a single shot shot gun can be. It is small and light and of course, cheap! In 12 ga it "covers everything from bunnies to bears" as one guy put it. My dad had a single 12 ga when I was growing up. It was called "Nitro King" which was a store brand. I do not have fond memories of that gun. It was handed to me along with some slugs when I was 14 as my first deer hunting gun. It was brutal to shoot. One guy on Youtube (link is on my other thread) made his into a modern trade gun. It is his go to wilderness survival gun. He uses it for everything including muzzle loading it. Pretty interesting from the fact that it is all he really needs. I ran across a guy who bought chamber inserts for his. He has a 12 to 20ga, a 20 to .410/.45LC, a 410 to 22lr. He nests them all together and can shoot any of the above in his 12. Not to mention there are inserts for most handgun and many rifle calibers as well that would fit into the mix. Here's what I found. http://www.mcace.com/shotguninserts.htm http://www.shotgunadapter.com/ http://store.dinaarms.com/12_GA_Adapters_s/1.htm http://www.gunadapters.com/categories/Shotgun-Adapters/12-gauge/ http://www.americanspecialtyammo.com/Shotgun_Adapters.html My search revealed that ATI makes a tactical AR type stock and forearm for these guns. If you want to go even more tacticool they have a vented heat shield and a muzzle break (plastic). Choate makes a survival stock with storage in both the butt stock and forearm for the single shots. You can even buy pistol grips for them. So the question is what to do with it. Tacticool it out? Make it into a survival special? Keep it simple and use it as a truck/trunk gun. Maybe just stash it away with an ammo can full of a variety of 12 ga shot and slugs? Maybe pack it away with a variety of chamber inserts for the end of civilization.