I own the Advanced Armament Company Pilot can. Ive got about 4000 rnds through it (estimated). Its a sealed can so it is not user servicable. Its quieter than the Outback II. I've shot both side-by-side on a couple occaisions. If you want the QUIETEST muzzle can available for .22LR you want to get AAC's Avaitor. Its STUPID Quiet.
If you're can uses ALuminum (sp) baffels, then you DO NOT want to use a sonic cleaner..
Here is how you clean a sealed .22 can.
1. Soak it in Mineral Spirits for 2 days (48 hours) and bang the threadded end against a hard surface. Then let it air dry or blow it out with compressed air... Then shoot the first mag throug it with CCI Stingers or other very hot .22 rounds. 5:10 shots will blow all the other loose crud out the end...
2. Soak it for 4 or 5 hours in gasoline. Tap the treadded end against a hard surface, then blow it dry with an air compressor... DO NOT let it air dry. Gas is costic and can potentially harm aluminum (I dont know for sure). Next time you shoot use HOT rounds for a mag or 2.
THis is all you have to do and it will give you a LIFE-TIME of service. If you do manage to shoot it out, if you purchase a name-brand can the manu's will replace/repair it free of charge. AAC, Gem-Tech, and SWR (SWR's Warlock is VERY, VERY, nice too) will replace or repair a damaged baffle stack free of charge... AAC is a little slow on customer service but will stand behind their products, Gem-Tech is REAL good about standing behind their stuff and customer service is OUTSTANDING, and SWR is top-of-the league as well!
A side note.. Any can that is not sealed will NOT be as quiet as the sealed units are. The TI is a GREAT cheap can. You can take it apart, but there really isn't a need to unless you want to scrub your baffles to a gleaning finish again, but that's not neccessary... really it isn't.