FTN.3 Suppressor Pack

3d printed ftn 3 suppressor

FTN.3 Suppressor Pack STL Files

DIY rifle suppressor capable of withstanding continuous full-auto fire

“Potato On The Barrel Keep Quiet.” -QUE.

Supersonic just got super quiet. The FTN.3 (F*** The NFA) is a Full DIY rifle suppressor capable of withstanding continuous full-auto fire. An evolution of the DMD9 and previous FTN models, this can is the full realization of the dream we’ve all been waiting for: the complete and utter destruction of the National Firearms Act’s control over suppressors.

Shop Husky Armory

Brought to us from on high by pla.boi and his army of beta testers, this release is a fantastic project for advanced DIY builders with experience in handling specialty materials.

As with any build dealing with items regulated by the National Firearms Act, 3DGunBuilder advises prospective builders to exercise extreme caution when tackling a release like this one. Be aware of all applicable laws in your legal jurisdiction and take care to file any necessary paperwork. We are not lawyers, nor are we responsible for any repercussions you experience. Nothing here is legal advice.

In The Wild



Video Credit: @DrDeath1776 (Twitter/X)

FTN.3 Technical Specs

The files are designed to accommodate PLA+ as a minimum, though documentation recommends filled nylons for best results. Documentation lists specific print settings. Durability may vary depending on selected print settings and printing materials.

The release is split into two main packages, the rifle suppressor and the pistol suppressor.

The FTN.3 rifle suppressor has been tested extensively and is confirmed to perform stably with the following supersonic calibers:

  • 5.56 NATO
  • .300AAC Blackout
  • .308 Winchester
  • 7.62 x 39mm
  • .458 SOCOM

The FTN.3 pistol suppressor is confirmed to perform stably with the following calibers:

  • 9mm Parabellum
  • .45 ACP

There are 3 variants for each version designed for different attachment methods, some of which are caliber-dependent.

FTN.3 Parts List


  • Breek Arms Castle Blast Shield and Flash Hider/Brake
  • KAK micro slimline flash can


  • ½ x 28 to ¾ x 16 OR ⅝ x 24 to ¾ x 16 steel thread adapter
  • Fiberglass cloth (8″ W)
  • Carbon fiber tube (50mm OD, 47mm ID)
  • 1-18 x 1-¾ x 18ga machine bushing (Form 1 engraving)


  • Epoxy resin
  • Wire brush
  • Utility knife

FTN.3 Build Instructions

The FTN.3 suppressor pack is one for the history books, perfect for saving your hearing on your next range day. Download and build one today!

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DISCLAIMER: 3D STL files are for learning and documentation purposes only. The users of this website and files need to be aware of all applicable local, state, federal and regional laws. 3D Gun Builder does not encourage, condone, or promote any illegal activity.

3D Gun Builder (3dgunbuilder.com) does not host, provide, develop, and/or have any affiliation with the firearm STL files or 3dgunvault.com. All files are hosted by a third party.

Kem Regik
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