TOP: AR-15 chambered in .450 Bushmaster, BOTTOM: AR-15 chambered in .300 AAC Blackout. Both are utilizing a custom designed lower receiver that was also 3D printed at DeWys Engineering for a Firearm Design project.
TOP: AR-15 chambered in .450 Bushmaster, BOTTOM: AR-15 chambered in .300 AAC Blackout. Both are utilizing a custom designed lower receiver that was also 3D printed at DeWys Engineering for a Firearm Design project.
Company owners office showing Firearm Design projects.
F3DP Owner Paul DeWys standing in his office displaying FFL07, Paul has always been passionate about designing and building firearms. This attitude extends to the rest of the team at F3DP as well and is the reason we have pursued being a source for 3D Printing for the Firearms Industry.

DeWys Engineering holds a Federal Firearms License for Manufacturing (FFL 07) as well as a Special Occupational Taxpayer for Manufacturing (SOT 02) and specializes in Firearm Design for customers in the defence industry. We offer a wide range of inhouse services to assist our customers including Engineering, Reverse Engineering, Metrology / Inspection, Cerakote, and 3D printing.

We have assisted customers in the defense and firearms industry’s over the years on projects including:


Federal Firearms License for Manufacturing (FFL 07)

There are multiple types of Federal Firearms Licenses each enabling the person or company holding them to transact in different areas of the firearms business. The chart you see to the right (click on it to view in full size) shows all the different types of FFL’s available and gives a summery of each.

At DeWys Engineering we hold and FFL 07 which is a manufacturing FFL. This allows us to have customers ship their firearms directly to us for use on Firearm Design R&D projects, for laser scanning to enable reverse engineering, and for testing the fit up of prototypes.

Firearm Design

Special Occupational Taxpayer for Manufacturing (SOT 02)

Just like with the FFL system, there are various different classes of SOT as well, each allows the person or company that holds it the ability to transact in different parts of the National Firearms Act (NFA) business.

At DeWys Engineering we hold a SOT 02 which allows us to work with NFA firearms like:

  • Machine guns
    • Full or select fire
  • Short-barreled shotguns and rifles
    • 18” for shotguns, 16” for rifles
  • Suppressors
  • Any other weapon
    • Or device capable of being concealed on the person from which a shot can be discharged through the energy of an
Firearm Design
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