I don't know what the Auto ordinance carbines cost, but you can find a real M1 Carbine for around $600. I've had two Inland's. I cleaned them up, put in new springs and they were unstoppable.
Anyway, just food for thought.
“If ye love wealth better than liberty, the tranquility of servitude better than the animating contest of freedom, go home from us in peace. We ask not your counsels or arms. Crouch down and lick the hands which feed you. May your chains set lightly upon you, and may posterity forget that ye were our countrymen.” ― Samuel Adams