Get a wooden dowel and a 10 gauge brass cleaning brush. Use the dowel to push/knock the baffle stack out. Use the 10 ga brush to clean the inside of the can of big stuff. 22lr is very nasty and cleaning depends some of ammo and if it is pistol or rifle you are using. The baffles don't have to be completely clean; but knock off the carbon and get all the lead off. ARC22 has aluminum baffles, so you can't dip them. You can also get some FireClean and coat everything inside good and that will help some.
Theres something a few members like to use, either Fireclean or bore butter, something, can't remember which but its suppose to make cleaning a lot easier. It coats the baffles
PS: Thats one of the reasons I went with the Silencerco Sparrow. They have clamshells around the monocore that helps prevent the guts from seizing to the tube.