I just got back my 20 ga Ideal grade with a hunter single trigger,and it doubled on me.I had the ejectors worked on and the gunsmith said he had test fired it and the trigger was light............ Apparently when he got into the gun he remarked that the trigger was in good condition(he said he has seen some buggered up work on a lot of them) This is my first single trigger and don't know if they are finicky or is it an easy fix. I have had Parkers(Repos. 28 ga. that had a single trigger,doubled only once and was just fine after that)