M4 magic pin - rear

thingiverse

This is a rear magic pin for airsoft M4 type guns. This pin tightens the connection between the lower receiver and the gearbox. It is too short to use as a front pin. Solidworks file from SW2016. Clean up (flatten) the points where the segments are connected with a file. For tightening I used an M3x30. The hex goes into the provided socket and the bolt head to the "narrow" part of the pin. Just print it in whichever direction. I printed it with the wide part on the top. Also available on [Grabcad](https://grabcad.com/library/magic-pin-rear-3d-print-1).