HUXWRX CA$H 9k 9mm Pistol Silencer

MSRP: $662.00
(You save $88.00 )
ATF approval needed, will ship in 2 to 4 weeks from ordering

HUXWRX CA$H 9k 9mm Flow-Through Pistol Suppressor

Compact, quiet, low blowback

Experience unparalleled silence and performance with the HUXWRX CA$H 9k 9mm, a groundbreaking suppressor that integrates our latest OSS Flow-Baffle® technology. Boasting a compact and lightweight design, this state-of-the-art silencer ships with a 1/2 x 28 direct thread mount, making it an ideal choice for submachine guns, pistol caliber carbines, and even short-barreled rifles equipped with subsonic .300 AAC Blackout.

The standout feature of the CA$H 9k is its innovative Flow-Baffle design, a remarkable engineering feat rooted in our patented OSS Flow-Through® technology. Flow-Baffles direct the expanding gas away from the bore-line, while radial grooves channel them forwards through the suppressor, ensuring minimal blowback and maximum comfort for the shooter.

In the evolving world of silencer technology, the age of bulky suppressors and brute-force suppression is rapidly receding. Pioneering manufacturers like HUXWRX, previously known as OSS, are at the forefront of this evolution, leveraging cutting-edge technology to deliver improved results. Our Flow-Through technology is a prime example, reducing blowback on semi and full-automatic platforms without significantly affecting the weapon's kinematics. This innovative approach not only reduces wear and tear on your firearm but also lowers the sound impulse and toxic gas exposure for the shooter.

The HUXWRX CA$H 9k, with its exceptional lightness, superior suppression, and outstanding durability, rises to meet the demands of the current resurgence of sub-machineguns and pistol caliber carbines. While it includes a direct thread mount, the CA$H 9k is also compatible with various other adapters and piston assemblies (not included) to fit a range of weapons, including traditional reciprocating barrel pistols. This suppressor is user-serviceable, fully automatic rated, and weighs a mere 5.9 ounces in direct thread configuration.

The HUXWRX CA$H 9k 9mm suppressor is made from titanium, 17-4 stainless steel, and aluminum. The flow-baffles, internal adapter cage, and direct thread mount are made of 17-4 heat treated stainless steel. The end cap is aluminum, and the tube body is titanium. The suppressor weighs 8 ounces with the inertial-decoupling piston and spring assembly installed.
This OSS/HUXWRX suppressor is designed for use on submachine guns (SMGs) and is rated up to 350 Legend. It's also suitable for short-barreled rifles.


  • Caliber: 9mm - Rated for .300 Blackout subsonic, .350 Legend, 5.7X28, and .357 Magnum
  • Length: 5.15 inches / 13.08 cm
  • Diameter: 1.375 inches / 3.49 cm
  • Weight: 5.9 oz. (direct thread configuration)
  • Full Auto Rated: Yes
  • Material:  a combination of Titanium, 17-4 Stainless Steel and Aluminum
  • Includes: 1/2X28 direct thread adapter
  • Please Note: A Booster Assembly is required for reciprocating barrel pistols

Experience the future of suppressor technology with the HUXWRX CA$H 9k 9mm silencer. Perfectly balancing compactness, performance, and convenience, it is the ultimate accessory for any firearm enthusiast.


Charlie's Custom Clones is a corporate sponsor of Pew Science, an independent testing lab.  Pew Science has provided excellent independent test data using the HUXWRX CA$H 9k on both a pistol and pistol caliber carbine.


QUESTION:  Can you put a silencer on a 9mm pistol?

ANSWER:  Yes.  A pistol suppressor does the same job as a rifle and shotgun suppressor. However, most pistol silencers are for lower-pressure handgun rounds. You can find options made from aluminum, stainless steel, or titanium for calibers like 9mm.  The CASH from OSS / HUXWRX is a pistol suppressor.

QUESTION:  How long does a 9mm suppressor last?

ANSWER:  Most can be swapped between calibers. A high-quality suppressor can increase the accuracy of your rifle. Most modern suppressors are simple to maintain. Properly built, a suppressor will last you two lifetimes.

QUESTION:  What is the best material for a pistol suppressor?

ANSWER:  Selecting the best material for a pistol suppressor involves balancing considerations of weight, durability, cost, and heat resistance. Here are some of the most common materials used in suppressor construction:
  1. Stainless Steel: This is a popular material choice due to its excellent durability and relatively lower cost compared to some other materials. Stainless steel can handle high temperatures and high pressures well, making it suitable for suppressors used on high-powered firearms. However, it's heavier than some other materials, which can be a disadvantage in certain applications.

  2. Aluminum: Aluminum is lighter than stainless steel and also less expensive, making it a good choice for rimfire and pistol suppressors where the pressure and temperature are lower. However, it's not as durable or heat-resistant as stainless steel, so it's not suitable for high-powered rifles.

  3. Titanium: Titanium is an excellent choice for suppressor material because it combines the benefits of both stainless steel and aluminum. It's lightweight like aluminum and as durable and heat-resistant as stainless steel. However, it's also the most expensive option, which can be a deterrent for some users.

  4. Inconel: Inconel is a family of superalloys known for their ability to withstand extreme heat, pressure, and corrosion. They're often used in parts of firearms that will see the most heat and pressure (like suppressors), but they are also on the expensive side.

Ultimately, the "best" material for a pistol suppressor depends on your specific needs, including the type of firearm it will be used with, how often you shoot, and your budget. While titanium offers the best balance of weight, durability, and heat resistance, it may not be necessary for casual shooters using lower-powered firearms, where aluminum or stainless steel would be sufficient and more cost-effective.

QUESTION:  Is OSS and HUXWRX the same company?

ANSWER:  Yes, the new name is HUXWRX.

QUESTION:  Can civilians own a pistol suppressor?

ANSWER:  Yes, anyone with a clear criminal background check can own a suppressor in the 42 states in the US where Suppressor are legal.  There is a registration requirement with the ATF, and the payment of a $200 tax stamp to own the suppressor.  Your local dealer will hold the suppressor until your tax stamp is approved.

QUESTION:  Can I buy a suppressor online?

ANSWER:  Yes, you can buy from Charlie's Custom Clones, right here.  We will send your purchase to your local dealer and he/she will work with you on the ATF paperwork which is called a Form 4.  Charlie's will send the suppressor to your local dealer in roughly 3 weeks, after we receive approval to transfer to your local dealer from the ATF.

Buying and shipping through Charlie’s is easy, but there is some information you need to know. This item must ship to FFL holder. No civilian exceptions.

       1)  Check your state laws to make sure the federally regulated item you want to purchase is legal in your state.

       2)  Find your FFL… Have your dealer send us a copy of their FFL and SOT to Charlie’s (Make them earn their fee!). Not every FFL is a SOT or Class 2 / Class 3 dealer.  

       3)  Be patient! You should hear from our compliance department within 3-4 business days. If not, feel free to reach out for a status update.

That’s it! We try to make this process as simple as possible for our customers. Please click the “Buying a Firearm” tab at the top of this page for more information.