Yes it is. Your going to need to rebore this barrel,providing its not out of specs,and if you can get it apart. This is definately not a general rule,But EVERY Rotomo Ive restored has been of STD size(Very Unusual,but true). So hopeflly the odds are good and youll have room for resize. Pistons and rings are still available in Std,020,040 and 060. Check the "ODK" Website for parts.
