First, Ruger's guns were the first to go because their 2-year cycle on the Roster of guns came up first.
If you haven't checked lately, most M&P handguns are also no longer available here, and Shields are about it that are left [until THEY fall of the list].
So, good luck finding the M&P here.
Yes, here. I FEEL your pain!
The way it was explained to me was that the gun company would have had to legally guarantee they would NEVER change the material or supplier of a single pin, screw or spring [usually subcontracted parts] in order to stay on the list.
The "Serial Number mark left by the breech face and firing pin" requirement was the final nail in the coffin.
I am rooting for their lawsuit against the state! GO S&W/RUGER/NRA!
Instead of criticizing them, you should be rooting for their lawsuit. What other gun maker is putting money where their mouth is to support a LEGEAL CHALLENGE to these laws, instead of just backing off and walking away?
Revolvers don't have to have the serial number requirement, IIRC, because they don't auto-eject. Thus, it wouldn't add to public safety.
Single-Action revolvers don't have to be on the list at all, and Ruger makes a LOT of good single-action revolvers.
My next ruger will be either a BlackHawk or a Super BlackHawk.
I like the M&P fit better. A Glock Gen 4 might be as good, but the Gen 4 is NOT on the list either.