What do you mean by upgraded? It is a brand new can for them, and is ridiculously quiet. Very smart, threadless tube design and monocore baffle.
If you are worried about it being aluminum, dont be. It is tougher than anything you will run it on for a 22. and it cleans very easily with a toothbrush. In my experience, monocores do not build up crud as bad since they do not have a perpendicular surface to the gas, like a k baffle does.
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To get the better price, i would need 5+ of one model.
Gotcha. Well I would probably be down for a 22 or 762.