Suppressors 101 | Episode 5 - Calibers & Compatibility | Palmetto State Armory

Published on January 1, 2026
Duration: 8:42

This guide, based on expert instruction from Palmetto State Armory, details how to select the correct suppressor caliber and ensure compatibility across a firearm collection. It covers specific considerations for rimfire, pistol, and rifle suppressors, including maintenance, modularity, and the importance of checking barrel length restrictions. The advice emphasizes choosing suppressors that match or exceed the firearm's caliber and pressure requirements for optimal performance and safety.

Quick Summary

The most critical factor when purchasing a suppressor is its caliber compatibility. Ensuring the suppressor is rated for the specific caliber of your firearm is essential for safe operation and optimal performance across your entire firearm collection. Rimfire suppressors require user-serviceability for cleaning, while pistol suppressors may need a Nielson device for tilting barrels.

Chapters

  1. 00:00Introduction to Suppressor Calibers
  2. 00:50Rimfire Suppressors (.22 Cal)
  3. 02:12Pistol Suppressors (9mm & .45)
  4. 03:53Rifle Suppressors (5.56 & .30 Cal)
  5. 06:12Barrel Length Restrictions
  6. 06:38Big Bore Suppressors (.36 & .46 Cal)

Frequently Asked Questions

What is the most important factor when choosing a suppressor?

The most critical factor when purchasing a suppressor is its caliber compatibility. Ensuring the suppressor is rated for the specific caliber of your firearm is essential for safe operation and optimal performance across your entire firearm collection.

Why do rimfire suppressors need to be user-serviceable?

Rimfire suppressors, especially for .22 LR, must be user-serviceable because the lead projectiles can leave residue. The lower pressure of rimfire cartridges means they may not fully clear debris, requiring regular cleaning to maintain performance and prevent damage.

Can a .30 caliber suppressor be used on a 5.56 NATO rifle?

Yes, a .30 caliber rifle suppressor can generally be used on a 5.56 NATO rifle. However, a dedicated 5.56 suppressor is often preferred as it is typically lighter, shorter, and quieter due to its tighter bore diameter.

What is a Nielson device and when is it needed for suppressors?

A Nielson device, also known as a booster, is required for pistol suppressors used on tilting barrel handguns. It uses a spring and piston system to manage recoil and ensure the firearm's action cycles correctly with the added weight of the suppressor.

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