Just a thought but wouldn't a rifle barreled action and the stock be close to as compact when disassembled? You could pillar/glass bed a stock or even better aluminum bedding block and have it quick take apart and quick reassembly for a LOT less cost, and it wouldn't wear the barrel threads like a true take down would. If bedded properly, it will come apart & reassemble with no change in impact, and still be about as short, depending on barrel length.