I have no idea about the decommission, but the other questions I can answer to some extent.
First time I picked it up, I smashed the rock I was shooting at about 20 yards away. Every shot out of it so far has been right on target. I've put about 50 rounds through it, perhaps. My dad bought it from a local pawn shop, so I have no idea how much it has been fired before I had it.
What is your opinion of this gun?
Absolutely love it. Great balance. When I fire it, it comes back on line very quickly. Mine is stainless, so I love the look of it as well. If you get the chance to pick one up, I would say grab it, it's worth it.