If it's ANIB (except for the rounds his wife shot through it), I'd say that a fair retail price would be around $450.00 or so. A fair price for both of you would be $400.00. He gets $400.00 for something he doesn't use and you get a good deal for something you want, even if you don't "need" it.

Then again, when did "need" ever have anything to do with accumulating 3rd generation guns?

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Can open, worms everywhere.