FBA – Fixed Barrel Adapter

FBA – Fixed Barrel Adapter



Non-Standard Size

If you are ordering a non-standard size, please input size requested below ($75.00 will be added to your order). If your desired thread size is too atypical or there is some other issue, you may be contacted for a quotation, as the $75 surcharge may not cover all operations.
Leave this field blank if you are ordering one of the standard sizes.

Host Firearm and Caliber

What firearm, caliber and length of threads are we looking at for your custom application? This information is critical to the manufacturing process and there may be a surcharge for us to research it ourselves if it is not entered here.

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This adapter mounts the Mystic X, Cosmic, Infiniti X or Centurion silencer to various fixed barrel firearms. Essentially a thread adapter, this is the most basic and simple way to get your suppressor onto your host weapon. The full size FBA is the ideal firearm silencer adapter for centerfire rifles, as its larger size in comparison to the Low Profile FBA gives it a larger expansion chamber, prolonging the life of the silencer.

Fixed Barrel Adapters are also backwards compatible with older Mystic and Infiniti silencers.

Additional information


1/2-28, 5/8-24, 1/2-36, 14x1mm LH, 13.5x1mm LH, 18x1mm, 11/16-24, Non-Standard (input below)


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