After doing a little more research I think the solution is the Mark III target pistol with bull barrel and picatinnany rail 5.5 in. I have heard they are a bear to take apart and clean. That is why I was looking at the M&P to start with, as it is easier to clean.
There are some people who like to clean their guns after every use. I am not one of them. But that does not keep me from owning several MKIIs. I will probably get an SR22 sometime in the future. A buddy got one and it works well and is nice to shoot. But I have been hooked on the Ruger Mark series since the mid 70s. I use to clean the first MKI I got pretty often. I had to learn the take down and had it down well. Just found out that it is not necessary to clean them that well every time. .
Most of the time I just lock the slide open if they start getting .22 bullet crud in the ejection port. I swap the port and bolt face out with bore cleaner on a Q-Tip. A little lube A few passes with a bore brush and a clean patch gets them going.
I only do the take down about once a year or two. Depends on how much they have been fired. When relatives come over., the Marks and the 10/22s always get a workout. And if they start acting up while shooting aot, I just do the quikie clean dnd get them back to the shooter.
This one gets used alot. Wife's favorite.
A 5.5" Bull barrel Stainless. My favorite.
And a 6 7/8" Taper Bull Stainless. Kinda heavy, but shoots great.
Ya may be able to get a used one, but can't be picky about barel length or finish. All of mine have been used. The stainless ones definitely show little or no wear. I picked up a couple of blue MKIs at gunshows that were LNIB in 2012. Got a blue target model for 2 bills and a standard for 175. Both worked great, but eventually got traded.
