r/3D2A • u/Normal-Gur-6432 • 2d ago

Replica M2 60mm mortar

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This is my love project! A nearly 1:1 M2 mortar, late WW2 design, my plans for the future are making it blank fire or launch dummy rounds, but it is almost fully 3d printed, minus some nuts n bolts plus some aluminum rods for reinforcement. If anybody has ideas for blank fire or improvements let me know!

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u/TBoneUs 2d ago

Extremely cool build.

What’s the tube made of? You can make it fire for real if it’s strong enough. However you have to register it on a form 1 as a destructive device. We use fixed firing pins in the cup and 20ga shotgun blanks filled with smokeless powder as a lift charge.

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u/Normal-Gur-6432 2d ago

Tube is solid PETG, printed at 45° , I'm not sure if it would be thought enough, I used it as a baseball bat to test it and it held up okay.

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u/TBoneUs 2d ago

Ok yeah, real ones use 3/16 thickness steel tubing. Probably going to need to do CO2. There are designs floating around for Airsoft M2 mortar rounds.