The smaller diameter objective would allow the bolt on my 1955 22LR Marlin to clear. Not sure the 100 yd parallax would be optimal for a 22LR though. There is a niche for you......
I had it on my 10/22 for a bit when I was playing with the prototype and it worked well enough, but at 10x, the image is not at optimal sharpness at 50 yards. Once you dial it down a touch, it seems fine. For a plinker 22LR scope it should work fine. I spent some time shooting offhand at varying distances, most of it between 2.5x and 4x and it worked quite well.
I do agree that 100 yards parallax setting makes a better fit for larger/faster rimfires like the 22WMR et al.
