Ruger Mini-14 and Mini-30
Traded this for a Yugo AK47 underfolder. I'm sure I'll have no regrets, I hope the owner of my AK feels the same way.
First step: figure out how to attach this modified M14 handguard at the back. I think I'll reinforce the handguard with some sheetmetal and fiberglass, then rivet the original...