Freedom Gear firearm cleaning components including aluminum and titanium solvent trap tubes, adapters, and end pieces

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Freedom Gear Components

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Trap Cups

Shop solvent trap cups and cleaning inserts by tube family, material, and configuration. Start with your compatible tube size, then compare aluminum, titanium, stepped cups, and filter-style components.

Micro C-Size D-Size 100C Aluminum Titanium
Not sure which cup fits your tube?

Compare Micro, C-size, D-size and 100C tube families, plus aluminum and titanium options in the cup guide below.

View Cup Guide ↓
Cleaning Components

What Are Solvent Trap Cups Used For?

Solvent trap cups and inserts are components used within compatible firearm-cleaning solvent collection systems. Their purpose is to help organize the internal cleaning setup and manage solvent and debris during routine firearm maintenance.

01 / CONTAIN

Control Cleaning Solvent

A compatible solvent collection system helps keep used cleaning fluid contained instead of allowing it to spill onto a workbench, cleaning mat, or surrounding area.

02 / ORGANIZE

Maintain the System

Individual cups and inserts make it possible to service, clean, replace, or organize compatible components within an existing cleaning system.

03 / COLLECT

Capture Solvent & Debris

Cleaning systems are designed to help capture used solvent and residue so the material can be handled appropriately after firearm maintenance.

04 / REPLACE

Replace Compatible Parts

Individual components allow customers to replace compatible parts without necessarily replacing an entire solvent collection setup.

Federal Legal Update Updated August 2026

The federal landscape has changed.

Federal regulation of silencers and related components has changed significantly during 2026. Effective January 1, 2026, Congress reduced the federal making and transfer tax applicable to most NFA firearms, including silencers, to $0.

In August 2026, a federal court also enjoined enforcement of several NFA registration, application, and approval provisions against the plaintiffs in Silencer Shop Foundation v. ATF and, where applicable, their members and customers. That injunction should not be understood as a universal exemption applying to every person, component, or transaction nationwide.

Federal law continues to define a firearm silencer to include certain devices, combinations of parts, and parts intended for use in assembling or fabricating a firearm silencer. Product classification therefore depends on the applicable law and the facts surrounding a particular item and its intended use.

A Common Question

Are solvent trap cups the same thing as suppressor baffles?

Freedom Gear sells the products on this page for their stated cleaning and solvent-collection purposes. Simply calling an object a “cup,” however, does not by itself determine its legal classification. Design, configuration, intended use, and applicable law can all matter.

  • 01
    Intended Cleaning Use

    Products on this page are marketed and sold as components for compatible firearm-cleaning and solvent-collection systems.

  • 02
    Terminology Isn't the Legal Test

    A product name alone does not determine whether an item falls within a federal firearms definition.

  • 03
    Configuration & Intent Matter

    Federal silencer definitions can include certain combinations of parts and parts intended specifically for silencer assembly or fabrication.

  • 04
    Laws Continue to Change

    The 2026 NFA tax changes and recent federal litigation materially changed the landscape, but federal, state, and local requirements can still differ.

Compliance Notice

Freedom Gear products are sold for their stated lawful purposes. Customers are responsible for understanding and complying with all federal, state, and local laws applicable to their purchase, possession, configuration, and use of any product. This information is provided for general informational purposes and is not legal advice.

Keep components in their intended cleaning configuration.

Freedom Gear markets these components for firearm cleaning and solvent collection. Do not drill, machine, or otherwise alter components. Federal, state, and local laws may apply differently depending on configuration and intended use.

Cleaning Accessory

A Cleaner Way to Drain Captured Solvent

Rather than altering individual components, a purpose-built cleaning-fluid drain valve provides a controlled way to empty collected solvent from a compatible cleaning system.

  • Provides controlled solvent drainage
  • Avoids unnecessary modification of internal components
  • Designed for firearm-cleaning fluid management
View Cleaning Fluid Valve
Freedom Gear solvent trap cup and cleaning system components
Routine Maintenance

Cleaning the Threaded Cup & Spring System

  1. Work in a well-ventilated area and use appropriate gloves and eye protection when handling used firearm-cleaning solvent.
  2. Position the cleaning system over an appropriate collection container before opening or draining it.
  3. Use the compatible drain valve or removable end component to transfer collected cleaning fluid into the container.
  4. For routine cleaning, relieve spring pressure as needed and unthread removable cups according to their normal threaded connection.
  5. Wipe the cups, spring, and tube interior before reinstalling the components in their normal cleaning-system configuration.
  6. Handle and dispose of used solvent according to the product manufacturer's instructions and applicable local waste requirements.
Do not drill or machine cups. Altering a component can affect its safety, function, and potentially its legal classification. Use compatible cleaning accessories rather than modifying components.
How the System Works

Thread-to-Thread Cups + Spring Retention

Freedom Gear's compatible cup system uses threaded connections between individual cups together with spring pressure to keep the cleaning-component stack aligned and seated inside the tube.

01 / THREAD

Threaded Connections

Compatible cups connect to one another through their existing threaded surfaces, helping maintain alignment inside the cleaning system.

02 / TENSION

Spring Retention

The spring maintains contact and compression within the assembled cleaning-component stack.

03 / SERVICE

Serviceable Components

The threaded arrangement allows compatible components to be removed for normal inspection, cleaning, and replacement when needed.

Common Questions

Cup System FAQ

How do Freedom Gear cups stay together inside the tube?
Compatible cups use threaded connections between individual components. A spring provides additional compression to help keep the assembled cleaning stack seated and aligned inside the tube.
Can the cups be removed for routine cleaning?
Compatible threaded cups are serviceable components and may be separated using their existing threaded connections for normal cleaning and inspection. Reinstall them in their intended cleaning-system configuration afterward.
Should I drill holes in solvent trap cups to drain cleaning fluid?
No. Freedom Gear does not recommend drilling or machining the cups. Use a compatible drain valve, removable end component, or other cleaning-system accessory designed to manage captured solvent without altering individual components.
Are threaded solvent trap cups automatically classified as suppressor parts?
Legal classification is not determined solely by whether a component is called a cup or by the fact that it has threads. Applicable federal definitions can consider a component's design, configuration, combination with other parts, and intended use. Freedom Gear sells the products on this page for their stated firearm-cleaning purposes.
What should I do with used firearm-cleaning solvent?
Follow the cleaning-solvent manufacturer's handling and disposal instructions and any applicable local hazardous-waste requirements. Do not dump used solvent onto the ground or into a storm drain.
Freedom Gear products are sold for their stated lawful purposes. Customers are responsible for complying with all applicable federal, state, and local laws. Information provided on this page is general product information and is not legal advice.