dcmdon
NES Member
You’re putting a lot of qualifiers on this that weren’t in the original post, but okay....
Google Olympic Arms OA93. If you can’t figure out how to build something similar with 3D printing technology and polymer lowers, I don’t know what to tell you.
These may not be the answers you want but they are ways you can build an AR-15 pistol in MA. If you want one with all the bells and whistles and no restrictions; move.
First the OA93 is too heavy.
2nd. Nobody makes one in plastic.
3rd - you can't 3d print it and expect it to have it last or be at all useful.
4th. The fact that you would suggest that 3d printing with any normal readily available printer is a real option suggests that you are either ignorant, or grasping at straws seeking to defend a point that is simply wrong.
THEN you essentially move the goal posts and say , if this isn't what you want MOVE.. Uh. No that was exactly my point. If you don't want to move.
So I'll lay it out again. With a bit more detail. Full feature - threaded bbl, semi auto, detachable mag, reasonable construction materials (no magnesium lowers for $800, or plastic 3d printed lowers that will break at the buffer tube threads after 100 rounds). This is the only way to do it MA legal.