Suppressor carbon problem

[frozenmud]

Ran into a problem with my threaded .22 rimfire can. I have ran a lot of rounds through it with my Walther P22, yesterday I pulled it off to put onto my AR-15 with a .22LR conversion and I could get it to fully thread on. The P22 adapter has about 3/8 of an inch of threads and the AR has over half an inch of threads.

The threads in the can that are not protected by the P22 adapter filled up with carbon and junk. I was thinking about sending the barrel to ADCO to have them cut down the amount of threads off of the AR barrel to match the P22 adapter.

Also I have been thinking about getting a ultra sonic cleaner any way and this would push me over the end.

Or just don't worry about it and thread it on as far as it will go and call it good. I a bit nervous about getting a half 28 tap and cleaning the threads that way.

How would you fix it? Is their any one local that you would trust to cut on your barrel? Thanks for the input.

[00tec]

Why not get a tap and clean out the threads on the can?

[DOC]

Sonic cleaner works great too.

[DeusExMachina]

Be careful of a sonic cleaner and aluminum. It can cause pitting and damage the can. Most manufacturers will not warranty cans that were cleaned in a sonic cleaner.

Don't know what can you have, though.

[blacklabel]

Would some heat and a wire brush clean it out? I'm just throwing stuff out there.

[DOC]

I used a sonic cleaner with dish soap and hot water. I only cleaned if for 15 minutes. It got my guns squeaky clean. I don't know if it will hurt aluminum or not so you might want to try it out on a pop can or something first.

[frozenmud]

I'm going to try a .45 bore brush. The can is a Ti so it should be ok with the ultra sonic cleaner. However I am nervous about dropping that much money in to one after reading stories about it taking the finish off of different parts. Also I'm going to look around for a tap and if I use the tap I will just go slow and take my time. Either way thanks for the input!

[DeusExMachina]

I used a sonic cleaner with dish soap and hot water. I only cleaned if for 15 minutes. It got my guns squeaky clean. I don't know if it will hurt aluminum or not so you might want to try it out on a pop can or something first.

Well, a test for a "good" sonic cleaner is how fast it will dissolve aluminum foil. Rob at Bowers told me why, and why that doesn't matter...so there's two sides to it. I just have heard that most manufacturers will not warranty it if it's cleaned in a sonic.

Let me do some googling...

[DeusExMachina]

I guess it's really the chemical's fault. Acidic and basic solutions can strip away the oxidation on aluminum (Al reacts with air and oxidizes almost instantaneously, which protects it) and will be magnified by the cavitation action of the cleaner. The oxidation will reappear, then be stripped, rinse repeat until you have some severely damaged aluminum or none at all.

I know your can is Ti, but just for those reading the thread, just use water or if you use something else make sure its aluminum safe and test carefully.

[Irving]

I've heard you can freeze the can, then tap it on the counter and the frozen lead comes out in chunks. Never personally tried it though.