2A News ← All Articles

Suppressor vs. Silencer: What’s the Difference and Are They Legal?

May 21, 2026

Quick Answer

The terms “suppressor” and “silencer” are often used interchangeably, but legally and technically, they refer to the same device: a firearm accessory that reduces the acoustic intensity of a gunshot. The term “silencer” is outdated and carries a Hollywood-fueled misconception that these devices eliminate sound entirely – they don’t. They *reduce* sound, often significantly, but a gunshot will still be audible.

  • Legally Identical: Federal law (the National Firearms Act) regulates both suppressors and silencers the same way.
  • Functionally the Same: Both devices attach to the muzzle of a firearm to slow down and cool expanding gases, reducing noise.
  • “Suppressor” is Preferred: Modern firearm enthusiasts and manufacturers generally prefer the term “suppressor” as it more accurately reflects the device’s function.
  • NFA Regulations: Suppressors are heavily regulated under the National Firearms Act (NFA), requiring a background check, $200 tax stamp, and registration with the ATF.
  • State Laws Vary: While federally legal, suppressor ownership is restricted or prohibited in some states.

BT Gun Company is a licensed FFL dealer and can help you navigate the complexities of NFA items. Stay informed on 2nd Amendment news to understand changing regulations.

The History of the Terminology

The confusion stems from historical usage. Early attempts at reducing firearm noise were often called “silencers,” largely due to their portrayal in fiction. These early devices were often crude and ineffective, leading to the unrealistic expectation of complete silence. As technology improved, and devices became more effective at *suppressing* sound rather than eliminating it, the term “suppressor” gained favor among those in the firearms community. The ATF officially recognizes both terms as referring to the same NFA item.

How Suppressors Actually Work

A suppressor isn’t magic. It doesn’t eliminate the sound of a gunshot. Instead, it utilizes a series of internal baffles or chambers to slow down the expanding gases created when a firearm is discharged. This slowing process allows the gases to cool and expand more gradually, reducing the sharp, cracking sound associated with a gunshot. Different suppressor designs and materials (stainless steel, titanium, aluminum) affect performance and weight. Caliber-specific suppressors are available, and some are multi-caliber. For example, a .22LR suppressor like the Dead Air Mask HD is popular for its versatility and sound reduction, while larger caliber suppressors, like those for 5.56 NATO or .308 Winchester, are built to handle the increased pressure and volume. Prices range from around $200 for a basic .22LR suppressor to over $1,500 for high-end, multi-caliber options.

Legal Considerations and the NFA

Understanding the legal landscape surrounding suppressors is crucial. As mentioned, they are regulated under the National Firearms Act (NFA). This means:

  • ATF Form 4: You must submit an ATF Form 4 application to purchase a suppressor.
  • Background Check: A thorough background check is conducted.
  • $200 Tax Stamp: A $200 tax stamp must be paid.
  • Registration: The suppressor is registered to the individual purchaser.
  • Waiting Period: Approval times can vary significantly, often taking several months or even longer.

Furthermore, state laws vary dramatically. Some states, like Texas, are suppressor-friendly, while others, like California and New York, prohibit their ownership altogether. It’s your responsibility to know and comply with all applicable federal, state, and local laws. BT Gun Company can provide information and resources, but we always recommend consulting with a legal professional regarding NFA regulations.