Test luger sear dilemma

[gunbugs]

Over the years I've had excellent results by dropping the offending part into a bottle of Hoppe's No9 solvent. If left overnight, most, if not all the old dried oil will just "fall off" and not be there anymore. And there is a very high chance the plunger will free up. No heat, no lubes, just an old fashioned solvent that has worked many, many times for me. Good luck!