This site allows you to engrave with a Ghost Gunner CNC machine. Enjoy!
Please note that the ATF requires a minimum character height of 1.5875mm and minimum depth of 0.0762mm. In order to engrave any area on the left side it is necessary to either modify your stock left jig, 3D print one from the .stl files included in the .dd file generated by Ghostwriter, or to buy a set from GGD, who designed them. GGD also offers engraving bits, custom jigs that fit a variety of lowers, and the code to complete them. If you would like to purchase a set or get a list of available products, email GGD, and include your mailing address.
Additionally, if you have any swag associated with your operation, I’d be interested in getting some. Thanks!