Does anyone really think there going to see the .22 ARX 160 any day soon. The centerfire 160 (100) has been available in the USA for over a year now and it came out first yet not available in Canada. I would not wait for the # of years you would for the rimfire ARX. Saying that I don't know if the MK22 is a good choice either. Many people had problems with early ones. I know there are fixes provided by ISSC and that new ones are corrected from the factory. I would like one too but am a bit nervous.
Moe