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Wix 24003 / Napa 4003 K cup filter Retainer

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  • Shown here with a (Cap) not included. Caps sold separately.
  • 5 pieces shown with (Caps and Tube) not included. Caps sold separately.
  • 5 pieces shown with (Caps and Tube) not included. Caps sold separately. Filter elements are also sold separately.
  • 5 pieces will fit perfectly and are captured by our caps with no end play of parts in tube when assembled.
  • Cheap 100% biodegradable elements can be used to make solvent recovery a snap.
  • One filter retainer is all that is needed to filter your solvent but five will fit inside tube. Or we also sell exact length spacers that can be used to take up space in the tube.
Twin Tech Tactical

 Product Description




These (K-cup coffee filter) style retainers hold 100% biodegradable EZ-cup disposable paper filter elements and make solvent recovery cleaner and more economical than buying expensive Wix 24003 or Napa 4003 replacement filters for your solvent trap. They are CNC machined form T6061 aluminum and held to the closest tolerances so that five pieces can be stacked inside the wix tube and be captured tightly by our end caps with no rattle.

These parts are also sold in kit form at a discount. Click Here for more info.


These parts are perfectly legal to own and use as (solvent recovery filter retainers). However, if you modify these parts by drilling the center hole thru where a bullet may pass thru, the ATF may consider that intent to build a suppressor. All NFA rules apply if the intent of the purchaser is to modify these parts for the use of building a homemade suppressor. You must first file your Form 1 and all supporting documentation with the ATF and wait for their approval before any modification to these parts is performed. You should also know your local laws if your intent is to build a suppressor.

Please keep your questions to us about this product relative to solvent recovery and filtering only. We will not answer questions on how to modify and use these parts as suppressor baffles period!



BUYER UNDERSTANDS THAT THESE PARTS ARE NOT SUPPRESSORS AND OR SILENCER PARTS IN ANY WAY SHAPE OR FORM.  Buyer fully understands that they waive their rights to ANY claims against Twin Tech Tactical for ANYTHING. These parts are sold for the intended purpose of cleaning firearms and solvent storage ONLY! In other words Twin Tech Tactical is not responsible for how these parts are used or modified after you receive them. Any modification to, or misuse of our parts is the sole responsibility of the purchaser. Twin Tech Tactical and its employees are not responsible for the actions of their customers or the manner in which they use our parts and will NOT accept any liability in any way morally, legally, or financially. These parts are legal to posses and use as sold, and we assume and expect that all of our products purchased by you are used for their intended purposes only and discourage any modification or misuse of any kind.

By purchasing our products you agree to the Terms of this website.

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 Product Reviews

  1. Perfect fit !!!!

    Posted by Unknown on Oct 28th 2017

    Very well made & the machine work if not the best , the best would call
    triple "T" for advice. All items I have purchased have been great.

  2. Fast shipping well made products

    Posted by Joe blow on Mar 29th 2017

    Very pleased with the products I bought. Only took a couple days to deliver

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