3D Printed MP5 Lower/Trigger Group Prototyping

We’ve shown you before some of the cool stuff Guy in a Garage gets up to and posts on his Yoot Oob channel. This time, the yoot’ is doing something very interesting — prototyping a lower for an MP5 that will take conventional AR parts.

Is that even possible? you may ask. Be answered:

It’s an early development mule, but it shows every sign of working. An MP5 that can take AR trigger components is potentially a very useful thing.

The 3D printed mule is expected to lead to a 3D printed prototype, which would then lead to a production part in metal. There are many ways to make that metal part — one could bend sheet metal and add small parts to make a weldment, machine the part from billet, or even 3D print it in ABS and then lost-ABS cast the part.

 

4 thoughts on “3D Printed MP5 Lower/Trigger Group Prototyping

  1. archy

    *** one could bend sheet metal and add small parts to make a weldment, machine the part from billet, or even 3D print it in ABS and then lost-ABS cast the part.***

    I haven’t done any real hard looking at the MP5 lower, but if my memory of the G3 grip assembly isn’t too far off, a folded and riveted assembly might be possible, too- think a laminated Master padlock. Of course the injection molded H&K *Navy Lower* makes more sense for a serious production run, but for one-offs and developmental tweaking, it seems at least possible.

    And if doing a *lost ABS* casting of a lower, Kerr’s Satin Cast 20 can be had in jeweler’s quantities for under $50.00. Hmmm, a *lost ABS* cast MP5 lower in brass….

    http://www.kerrcasting.com/products-1/investments/satin-cast-20

    1. Hognose Post author

      Steampunk MP5? Heck, it’s halfway to steampunk already, with all those knobben und protrusions.

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