My mum is a bit of a clean-freak and in doing so either threw out or otherwise misplaced the de-rifling choke and key for her Circuit Judge carbine. I wanted to switch out the chokes before the Home Defense Shotgun class at Top Gun June 17th. I bought a new choke but didn't think of the key.
Any ideas how to homebrew a key or am I going to have to shill out another 8 dollars shipping plus the cost of the key?