Using a 3D printed 10/22 receiver, spare parts I bought off MDS, and a V-block assembly from eBay... behold, the 0% 10/22. Total cost was about $115, I believe, not counting the amortized cost of the 3D printer and the taps. Filament cost was negligible. Receiver is 90% infill PLA.
Notably, there is some fitting left to be done for smooth operation and probably magazine fitment, but all the parts go in, the bolt will cycle with some hand pressure, and it ejects the dummy round I tried. So, it's a working gun! Yay!
Notably, there is some fitting left to be done for smooth operation and probably magazine fitment, but all the parts go in, the bolt will cycle with some hand pressure, and it ejects the dummy round I tried. So, it's a working gun! Yay!