I bought one of those new about 1973, if I remember right. Cut grass all summer to save up the money. Wish I had saved a few dollars and just bought the cheaper B model with extractors instead of ejectors. The ejectors never worked right. I kept the gun for about 15 years and it was in the shop more than in the field. Finally let it go cheap.
Some doubles can be harder to open because you have to cock both firing pins as you open it. Hope this is all you need. My ejectors never worked right and I was glad to be rid of it.