Looking at a Model 21- 20 gauge at a gun store. it looks like it is in pretty nice shape. I started to buy it. Then I noticed on the tag, it was originally M/F. But the chokes have been opened to IC/IM. I went into shock mode and turned and walked away. I don't know who opened them. Or who owns the gun. It is probably on consignment. I'm just afraid to fool with it. I want it original. There's no way to try it out. It's either buy it and take a chance or forget it. It might be sold by now. Still thinking about it. Would you buy a gun if the chokes had been opened? What do you think?