Believe it or not, the barrel wasn’t bad. Haha. I did resort to brake cleaner in the trigger groupIraqvetran8888 bought a ultrasonic long enough to hold a barreled action because he works a lot on milsurps, trying to get all the cosmoline and other garbage out.... looks like that would have been a good use case. I probably would have dropped the chamber section in a gallon of b12 chemtool for a bit.