(Photo courtesy of J. Scott Rupp)
December 02, 2025
By J. Scott Rupp
Unless you’ve been living in a cave, you’re aware of how easy it’s become to buy a suppressor. And if you’ve jumped on board that train, you probably know that at some point you’re going to have to clean your suppressor. Otis has made that easier with its new kit , which retails for $40.
For me the star of the show is the threaded soaking container. This allows you to place the entire suppressor, whether the complete unit or a disassembled one, into the container and soak it for 24 to 48 hours—and not worry about knocking it over and spilling liquid everywhere.
The kit comes with Otis’s suppressor cleaner concentrate, which you mix with warm water in a 1:1 ratio. This cleaner contains no petroleum products, and it promises to be safe on all mil spec and factory finishes. That includes anodized aluminum, stainless steel/inconel and titanium.
The formula is biodegradable, non-flammable and non-toxic. It’s non-hazardous as well, so it’s easy and safe to dispose of once you’re done.
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Included in Kit Also included are a baffle brush with handle, plus nylon, bronze and stainless steel gun cleaning brushes. Obviously don’t use the bronze or steel brushes on aluminum parts or the exterior. There’s also a micro-fiber cloth, as well as a pair of nitrile gloves and a small vial of CLP.
I disassembled a Banish 22 and a Banish 30 and placed the baffles from both and the tube from the 22 in the soaking container for 24 hours.
As someone who’d previously spent considerable time cleaning suppressors with various chemicals—as well as a sonic cleaner—I was impressed by how well the Otis kit did. Most of the fouling simply wiped off, and heavier deposits were easily removed by some judicious brushing. Even that probably would not have been unnecessary had I soaked for 48 hours.
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But the 24-hour soak got them as clean as I need them to be. It’s not like I’m going to eat off them. I do wish the soaking container had a smaller circumference so it would take less solution to fill to the necessary level, but then the supplied concentrate and all the accessories wouldn’t fit.
Suppressors don’t require a ton of care; you just need to service them from time to time. The Otis kit has everything you need to do that, and it cuts down on the effort.