Best solution to clean the fully sealed suppressor?

Hi all,
I need some recommendation on cleaning the fully sealed suppressor.

Here are some backgrounds
I've been using the Oceania Defense 7.62 QD suppressor for more than 3 years without cleaning (about 3000rounds). The carbon build up is so bad that the carbon flakes falls out of the suppressor and enter the bore from time to time when pointing the muzzle up. In this case I'm looking for chemical solutions to remove the carbon deposits. I've tried the ultrasonic but it doesn't really help.

Is Schletek Suppressor Cleaner Evolution any good? Is there other alternatives that w

my best bet would be to buy a supressor that may actually be cleaned. sorry.

Acetone should do it
Top cans the oceanias

Strong mix of Simple Green in the ultrasonic?

Just purchased the Schletek Suppressor Cleaner from reloading supplies. I'll post the review here if I can get the suppressor cleaned.

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Originally Posted by Preacher

Strong mix of Simple Green in the ultrasonic?

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Tried the simple green in the ultrasonics. Will make the carbon flakes to fall off but far from clean.

I'm planning to apply the Schletek Suppressor Cleaner first, then ultrasonic to clean the inner surface.

Acetone is cheap and effective

What does the manufacturer recommend ?


Do your homework on this, but I recall watching an Eric Cortina vid where he recommended using CLR and holy shit that stuff stripped the carbon off his barrels and brakes impressively fast, you would absolutely need to check to see if CLR would be corrosive to what your suppressor is made of though before trying it.
Eric did make it clear that he had only tested it on Stainless

Thanks! I will give it a try with my muzzle brake first.

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Originally Posted by eamars

Thanks! I will give it a try with my muzzle brake first.

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Please check to see if CLR will react to whatever your suppressor is made from before trying it on the suppressor.

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Originally Posted by dannyb

What does the manufacturer recommend ?


Do your homework on this, but I recall watching an Eric Cortina vid where he recommended using CLR and holy shit that stuff stripped the carbon off his barrels and brakes impressively fast, you would absolutely need to check to see if CLR would be corrosive to what your suppressor is made of though before trying it.
Eric did make it clear that he had only tested it on Stainless

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Bert from Oceania Defense suggests the simple green with ultrasonics. Tried and it only removes some. I will give it a try with different solutions.

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Originally Posted by dannyb

Please check to see if CLR will react to whatever your suppressor is made from before trying it on the suppressor.

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It was 3d printed Inconel 718, the nickle based alloy.

If you have access to copious amounts of bore solvent, I’ve plugged my suppressor before and filled it up for a few hours and given it a good rinse out after. Worked well


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As Tiaan suggested. I had a sealed suppressor on an old 303 that suffered from this. Just pour a few tablespoons in (I used Hoppes no 9), plug both ends, leave it in a handy spot for a day and give it a shake every time you walk past.

I finished up with a rinse with half a cup of acetone, twice, and allow to dry out thoroughly to remove any oily residues to reduce the possibility of detonating or dieseling in the suppressor. Never had it happen, but I have sufficient respect for the theoretical riskto guard against it!

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Originally Posted by eamars

Tried the simple green in the ultrasonics. Will make the carbon flakes to fall off but far from clean.

I'm planning to apply the Schletek Suppressor Cleaner first, then ultrasonic to clean the inner surface.

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Do it twice? 3000 rounds is a fair amount of shit built up

You shouldn't need a proprietary cleaner, they are expensive bullshit. Almost always a simple product marketed well. I'd be amazed if two cycles through the ultrasonic with simple green is still not good enough

Flood it with carb cleaner or Brake kleen? Shake , rattle and roll repeatedly , then flush with hot soapy water ?

Ultrasonic cleaner with heat should do the job.

Probably got a thick enough coating inside that it's bridged over the internal surfaces - the carbon needs to break up and flake off to clean the thing. Carbon is relatively non reactive, especially when it has a mechanical bridge locking it in place. Ultrasonic will be the solution along with time and a solution that is as strong as you can go without stuffing the surface or leaving a flammable residue inside. An alkali oil remover like you'd find in a workshop parts cleaner might be the go???

nobody has suggested a small bottle brush yet....interesting as a slightly oversized bore brush does wonders for the flakey wee bits....
agree to ask the fellas who made the thing

CLR is acidic, iron steel, duralim won't like it. An idea carbon has a different expansion rate than metal heat the whole suppressor to about 100 degrees ( you may have shot it that hot or hotter at times) then drop it into cold detergent solution and straight into the ultrasound.

Patch out accelerator dissolves carbon very effectively. I’d fill the can with some in a zip lock and put it in the ultrasonic. That’s how I’ve been cleaning my take apart suppressors. They come out pretty spotless.

Another option to consider carefully but may work if done correctly would be to fill the suppressor with a substance and some gently abrasive material like small ball bearings, or small stainless steel screws.

With each end plugged, sit it in a couple of rollers and set one up so it spins slowly enough for the abrasive material to not be forced outward by centrifugal force.
As it slowly spins, the ball bearings roll over the carbon deposits and chip away at them. A little bit like a wet brass tumbler.

Here are some feedback based the experiment I did last night.

Schletek Suppressor Cleaner -> Not really useful against heavy carbon deposit.
Simple green + 2 hours of ultrasonic cleaning -> It actually works better than the solution. It shakes the carbon flakes from the deposit, some, but not all.

There are still visible carbon deposits inside of the suppressor. I guess I need to keep using the ultrasonic cleaner for a while now.

Keep going with the ultrasonic and maybe as longshot said use some media like stainless pins if it's still stuborn

Tumbling with media will damage the finishing on the outside, for which I'd try to avoid. -- Although the cerakote already started peeling off due to the ultrasonic cleaning.

Just FYI, the cerakote finish will be damaged from ultrasonic cleaner.

Attachment 247940

Said it before but hey don't listen acetone it