Well this machine will get you what you want it does`nt make AR15 parts in seconds but in hours (mostly 45 mins - 1 hour) and depends on the details you added on it, I ordered mine too (waiting mode) for metal gun parts then you can rely on this machine, I even tried mass producing metal gun parts by only using a gantry CNC for wood, used a carbide bit (japanese) for wood, seems like you have the experience then I guess you know what im talking about
https://www.aliexpress.com/item/3-Ax...10345_10342_10
Note: im not advertising anything here, you can buy the machine and equipment at your own risk, it`s a chinese machine so beware, on my side I dont need their warranty whatsoever, I modify their units right out of the box. manual metal machining experience will be a must on using these unit due to the fact that there`s no data nor table to follow into, if you got extensive experience on manual metal machining then you can relate on my side