NT79 Launcher

3d printed nt70 launcher

NT79 Launcher STL Files

DIY 37mm Signaling Device

The Bane of Every MW2 Lobby

One of the most satisfying sounds you can hear in your life, I think, has to be the “bloop” of the M79 launcher, and this project can give hits of nostalgic pleasure all day long. The NT79 is a break action, single shot 37mm launcher that specializes in delivering payloads with historic swagger, and this has made it the most popular launcher release to date.

Designed by Fizzlez Firearms, a well-respected member of AWCY?, this is a great project for intermediate builders looking to get into the launcher scene.

You can find some of our other launchers we covered including the Anarchy 37mm, M202 Flash, Frankentfaust and B.A.L.L.S. Launcher.

Of course, as with any launcher, 3DGunBuilder recommends exercising extreme caution when beginning this project, as it requires handling dangerous materials, especially if you’re planning on making your own signals to launch. Keep all your fingers, life’s more fun that way.

In The Wild


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NT79 Launcher Technical Specs

The files are designed to accommodate PLA+ as a minimum, and documentation recommends specific print settings. Durability may vary depending on selected print settings and printing materials.

The design primarily makes use of DIY components, with only a few springs and the trigger used from an AR-15 parts kit. Most of the parts listed in the documentation are optional, so for the purposes of this piece, we’ll only be listing necessary items.

NT79 Launcher Parts List


  • AR mag catch spring
  • AR hammer spring
  • AR trigger spring


  • 4 – 4mm x 40mm steel rod
  • 5 – 4mm x 20mm steel rod
  • 2 – 4mm x 15mm steel rod
  • 1 – 3/8″ x 50mm steel rod
  • 2 – M4 x 8mm socket cap screw
  • 2 – M4 x 10mm socket cap screw
  • 1 – M3 x 35mm button head screw
  • 1 – Spring (≥3.5mm ID)
  • 2 – 0.22”OD x 1.6” spring
  • 1 – 1 ⅝” Fence post


  • Punch set
  • Armorer’s hammer
  • Allen/Hex key set

NT79 Launcher Build Instructions

Don’t miss out on this wave, the NT79 is the best way to kick off Launcher Season. Download and build one today (carefully)!

Is something missing or incorrect?

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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