I'm interested in picking one up, but I see they've fallen off the roster. Can I still A. Buy one from a private party (w/ transfer through a FFL) or B.buy one from a shop (surely they're allowed to clear out their inventory..right?)
Also, is the 4506-1 that much of an improvement over the original?
Also, is the 4506-1 that much of an improvement over the original?

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