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DIY Silencer: Oil Filter Edition 

UPDATE: please see my updated posts about how to get a "solvent catcher" adapter for an oil filter.

Did you know oil filters make good suppressors (or silencers as you n00bs call them)?  This is news to me; I thought the homemade silencer was simply as good as a 2 liter bottle (see my instructions here), but apparently an oil filter works good too.  Check out the vid:

Cadiz gun works has created a small adapter so your threaded barrel can be directly attached to an oil filter.  On their website this adapter is listed as a "solvent catcher" so all those solvents you use to clean pistol/handgun will be easily contained.  Yeah.... right....  I'm not sure if that info is old on their site, but this adapter is supposedly DOJ approved.  My BS filter is getting full, and I can't quite picture a DOJ employee in a suit testing this adapter.  Anywho, the other link from the vid pointed to American Specialty Ammo and it is listed in their class III section for the low price of $55. Which I guess makes this item slightly more credible?

Oil filters go for about $5 plus the $55 for the adapter, so you can easily get a felony for about $60!  Lol, it sounds kinda quiet, but I'm still not that impressed.  This can is so friggin big, you can pretty much kiss any sight picture good bye.  I also don't really like the fact that you have to shoot out the bottom of this homemade silencer.  Remember kids, don't do anything stupid or illegal.

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Reader Comments (5)

these oil filter suppressor adaptors seem half baked , and it does ruin your site picture (as would a soda bottle) but they preform as advertised. nothing beats a real suppressor (like my sparrow) but in extreme situations, having an adaptor that can accommodate MULTIPLE calibers without spending thousands could be very useful.
the funny thing is how some companies market the adaptors to be sold using the legit tax stamp registration redtape for suppressors OR you can purchase the SAME adaptor to be used as a "solvent catcher" (attaching oilfilter to gun barrel to catch/retain the dripping cleaning solvents) for like $50, there by avoiding the legal requirements (and the $200) -all perfectly legal until you shoot a hole in the filter.
i can definately see keeping one just incase in my gunbag for the zombie apacalype

September 19, 2012 | Unregistered Commenterkrustito

For everyone that reads this hear is the correct info. Owning a class III weapon or item is not a felony nor illegal. The transaction of a class III item without being a dealer and proper paperwork on the other hand is.

October 8, 2012 | Unregistered Commenterbw

how can i buy oil filteradapter

March 3, 2013 | Unregistered Commentermorris

You can go to Ebay and buy a Solvent Trap 1/2-28 ID 13/16-16 OD Thread Oil Filter Adapter and make sure you have your barrel threaded for 1/2-28 then go to your local auto zone and find a filter.....you now have a suppressor

March 9, 2013 | Unregistered CommenterRay

Im not sure about suppression on larger cal rifles or pistols, but on a .22 lr much of the crack you hear with standard ammo will not be suppressed due to this is the sound of the bullet breaking the sound barrier.. With .22 lr you would need to go with a sub-sonic ammo that gets the bullet velocity down around 700 feet per second to achieve low levels of noise or report. It would probably sound more in the range of a pellet gun firing.

December 1, 2013 | Unregistered CommenterDamonLee

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