DIY 10/22 Bumpfire Stock Posted May 6, 2014 in Guns & Gear, Other Gear & Gadgets, Rifles, Shooting Accessories by Nicholas C with 12 CommentsTags: 10/22, bumpfire, ruger Check out this DIY bumpfire stock for a 10/22 by Fire Mountain Outdoors. The giggles he gets from shooting it is infectious. I had the same laugh and enjoyment my first time shooting a full auto 22LR converted AR.