Other than completing AR-fifteen lowers, the Ghost Gunner might help make lots of other guns and with some 3rd party support you may open up the Ghost Gunner to execute other jobs like engraving your lowers. It's also possible to mill other lowers like a Polymer 80, AR-10 and 1911. https://ghost-gunner-for-sale12233.canariblogs.com/5-simple-statements-about-ghost-gunner-3-explained-47902982