I just ordered a couple Kidd buffers. I hope they will work. For many years I didn't care for the 10-22. I used a Marlin 39A. I got involved with Appleseed and discovered a sling, Volquartsen target hammer, and some tech sights turn the 10-22 into a short, light, good shooting gun.
The way I wound up with the parts gun I need the buffer for was by stripping out the receiver threads that hold the gun into the stock of a pet rifle. Pretty nauseating feeling when that action screw spins. I bought another receiver but then learned how to repair the one I stripped with a helicoil. That gun now shoots better than it did.
Since I had the extra receiver, a free barrel, and a free stock, I bought a bolt and spring. Got the trigger group out of another gun I put a BX25 trigger in. I am all about getting people, esp kids, to go to Appleseed. I maintain loaner guns so people can borrow them and am always looking for used, cheap 10-22s to sell to people who get interested for whatever I paid for them.
The cost of going to Appleseed can be too much if you are having to buy 1 or 2 guns, entry fee, ammo, gas, mats, etc. it can be pushing 1K if you buy two guns new and set them up. If they can borrow guns the first time it really cuts the cost. If they buy guns after their first try I wil help them set them up. I'm trying to get that parts gun ready for a kid who wants to go soon.