Ok, fair enough. But I don't see how that changes anything in your favor. The gun is still several decades old and has been shot to the point that it's worn out. If anything, most people would feel that someone who buys a worn out used product has less claim on the manufacturer for replacement/repair than the original owner would.
I understand where you're coming from. You gambled and bought a used, worn out gun thinking that the manufacturer would fix it cheaply (or maybe even free) and then that didn't work out.
If I did that, I would be disappointed too--people tend to be disappointed when they gamble and lose. But given the circumstances I certainly wouldn't feel entitled enough to that inexpensive service to complain publicly that the manufacturer was being too severe. And I would certainly feel pretty good about the manufacturer offering me a new gun at 1/2 MSRP as an alternative.
I stand by my original comment that an offer like that is actually very good. For perspective, try buying a worn out car, ask for inexpensive warranty service on it and see if the manufacturer offers to sell you a new model at 1/2 sticker price.
