FNX940 Details

The FN FNX pistol is a series of semi-automatic, polymer-framed pistols manufactured by FN America. Introduced in 2009, it is chambered for the 9mm, .40 S&W, and .45 ACP cartridges.

The 3D printed FNX940 by Vinh Nguyen is modeled after this pistol and compatible with both the 9mm and .40 S&W FNX versions.

A few of the design concepts were derived from the previously released 3D printed FNS940 model by TMS.

This printed FNX uses plates for rails, rather than a monolithic locking block or integrated into the fire-control housings.

FNX940 in the Wild

Photos

Video

The FNX940 is released. Enjoy! pic.twitter.com/CoQVc4l9vU
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The FNX940 shooting flawlessly. pic.twitter.com/kvzfXsVm9U
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Required Parts for the FNX940

Prerequisites

1 x FNX Parts Kit 9mm or .40S&W

1 x FNX Magazine Compatible with your Chosen Caliber

3D Printed

  • FNX Frame

Tools Required

  • Gunsmithing Punch Set
  • 4.0mm Drill Bit
  • Narrow, but not needle nose, pliers
  • Flathead screwdriver

The following tools may help, but are not required:

  • Flathead screwdriver

Suggested 3D Print FNX940 Settings

The slicer settings for the 3D printed FNX940 include the following suggestions:

Nozzle Size: 0.4mm

Layer Height

  • Height: 0.2mm
  • Initial Height: 0.14mm

Orientation: Rails Down

Infill Density: 100%

Supports: Tree Supports

Bed Adhesion: Preferred

Filament

  • PLA+
  • Tough PLA

Changelog

v1.0: Release

  • Promotion to release

v0.4: Private Beta Candidate 4

  • Revised front takedown lever clearances
  • Omitted horseshoe geometry
  • Refined front rail fitment geometry

v0.3: Private Beta Candidate 3

  • Loosened tolerances for rear rail plates
  • Loosened tolerances for front rail / locking block places

v0.2: Private Beta Candidate 2

  • Added right-hand safety selector cutout
  • Re-introduced some takedown-lever geometry
  • Tightened tolerances for the front locking block plates

v0.1: Private Beta Candidate 1

  • Initial commit

FNX parts kits are fairly rare and hard to obtain. If you are able to get your hands on this parts kit 3D printing your own FNX is a great way to honor this historical piece!