So to be more specific I want the 22/45 MkIV Lite with the threaded barrel. It will become my first firearm to get a suppressor. My plan for a second suppressor will be on my AR-9 pistol. But all of this is farther in the future as I have some other purchases planned this year.
I have that in a pre-Mark IV design. I've seen it debated that you can buy a Mark III, and then you can buy a 22/45. But, they are not the same, even though the basics are similar.
I'm guessing Ruger caught on to the confusion, and decided to lump the new 22/45 line-up with the Mark IV line-up for simplicity. That's a guess.
I've looked all over my 22/45 LITE, and there is no "Mark" mark anywhere that I can find.
Anyway, I installed the upgrades most recommended:
- Removed the mag safety disconnect, so I can pull the trigger without a mag inserted. It's not a big deal, but to strip the pistol, you had to remove the mag, do one series of steps, insert the mag, pull the trigger, remove the mag and continue. Now you can go through without having a mag close at hand. That change made mag ejects much smoother and trouble-free than before.
- Tandemkross compensator. Extends the barrel a bit for looks, helps balance in my opinion, and it "compensates" for not being allowed to own a suppressor!
- Burris FastFire III Red Dot. Got the matching 22/45 mount that integrates perfectly with the red dot.
- A couple of other parts I'd have to look for the receipts to know. Been awhile since I bought it.
The Mark IV, from what I read, fixes most things people complained about or immediately upgraded to improve. If I were buying new, I'd get the newest one.
I think they also made changes that makes take down and assembly so much easier, especially when mine has to be specifically held a certain way for the barrel to align and reconnect to the grip frame. That was a nightmare to learn how to do right the first time.
If you're looking for a 1911 .45 style pistol for the grip angle, then the 22/45 is the right gun. The LITE weight is also a big selling point.
But, if you're more into competitions and like the feel of the Ruger standard grip angle, maybe a Mark IV would be better? Ruger made so many variants, it's impossible to give any real advise without filling out a 5 page questionnaire. If you're in the factory showroom for a job application trip, see if you can try on all the different variants. That'll be the best method for choosing what's right for you.
I love my 22/45 LITE, but that doesn't mean I'm not willing to trade up! https://ruger.com/products/markIV/overview.html