As mentioned here, a claim about Permatex brake lube to prevent fouling didn’t pan out.
The first cleaning after 1000+ rounds required pounding the monocore out using a dowel, then Brushed/scraped most of the carbon/lead off after soaks in Ballistol before buying the Ballistol suppressor cleaning solution
https://ballistol.com/products/ballistol-suppressor-cleaner-2-pack-with-rubber-corks
And a 16oz Nalgene type bottle to soak the monocore in.
Since then i have sprayed a small amount of Ballistol in the can after every trip and finally cleaned it last night after 500+ rounds since the last cleaning.
This time i was able to disassemble the can by backing the rear cap off and smacking it a few times until enough of the front end was exposed i could pull the core and clam shell halves out.
Per Silencerco’s design claims, there isnt much fouling on the inside of the outer tube, the outsides of the clam shell halves, or the threads.
I phosphor tooth brushed some loose fouling off the monocore then stuck it in the suppressor solution overnight*
The piddly amount of fouling inside the tube and rear cap came off with minimal brushing after wetting/soaking with Ballistol oil.
The inside of the clam shell halves required scraping with a case mouth/phosphor brushing and longer Ballistol oil soaking to remove the lead/carbon fouling.
When i pulled the monocore out it was mostly clean other than some residual lead in a few spots that i opted to leave.
I degreased with Simple Green(do not use on aluminum can parts) and rinsed with water. Pics are after drying before oiling with Ballistol.
Per the shop i purchased at(and i can verify) do not disassemble a Sparrow unless you are ready to clean it and (not sure which finish is on what parts) https://www.silencershop.com/silencerco-sparrow-22.html
But overnight soaking in the Ballistol suppressor cleaner will remove the finish as shown on the monocore front cap which started out the same color as the outer tube.
