AR-15 M4A3 Upper Receiver

by tenlow, published

AR-15 M4A3 Upper Receiver by tenlow Nov 9, 2012

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This is an M4A3 upper receiver from an AR-15. After printing a lower I wanted to print an upper more or less to see if it would fit.

All I did was take the IGES model from CNCguns.com and make it a sliceable STL.


This is a purely decorative piece. The argument over whether or not lowers can be printed and used is valid, this piece however is completely unsuitable for use in a live firearm.

I printed the model upside down, but you might want to rotate it to print in a different orientation.

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