We haven’t been keeping up with Guy In a Garage, and last month he showed considerable progress on his attempt to 3D Print a working lower for an HK MP5, but using AR15 fire control components. One of the problems he runs into is that the HK roller-locking guns have an ejector that’s part of the fire control group and that comes out with the trigger group. (The AR ejector is in the bolt face). In this video, he’s showing a solution in progress for that problem.
by Hognose
This post first appeared on weaponsman.com
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