My local FFL has had a Ruger MKIV 22/45 LITE on back order for me for about six weeks and he called this morning and told me it had finally come in. I got it home and did a routine field strip and going over, first time I've really had my hands on the MKIV to see how the new and improved disassembly/re-assembly actually worked. Ruger did a good job re-engineering it and it's a shame it took S&W's new Victory to motivate Ruger to do what should have been done about 25 years ago.
I going to take it out to the range this weekend and see how and it handles side by side with my Ruger MKII 22/45 and my MKIII 22/45 LITE. Probably take the S&W Victory along as well.