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.