Suppressors Obsidian 9 fixed barrel spacer for 22lr?

[AK4900PA]

Heading to the range tomorrow and I wanted to try my Obsidian 9 on my CZ455 rifle and SW22 pistol just to see how it compares to my Q El Camino for sound reduction. Is it safe to use as is on 22lr or do I need to order a fixed barrel spacer?

 

[HansohnBrothers]

Get a spacer for rimfire use. 22 is super dirty and you don’t want to gunk up your booster assembly

 

[AK4900PA]

I have dedicated rimfire cans so I don't plan on using it for more than a couple rounds. I just want to see how it compares. Does the spring allow for enough movement with a 22lr for baffle strikes to be of any concern?