erich, thank you. I've actually reached out to Nuline and Briley, and am considering sending the barrel to Briley to thread. I'm only hesitating because I've read mixed reviews on how the barrel of the M12 holds up to steel shot. The bulk of reviews state you can fire it without risk if you thread and choke the gun, but a few here and there state that steel shot will still score the barrel, rendering it unusable after a time -
