
Originally Posted by
brianakell
Think we're talking 2 things. Finishing a flat or 80% is making a firearm. Putting parts on/off a firearm is not manufacturing it. I think Im reading jim's post wrong, which is what that seems to say to me. It almost reads like you need an SOT to change out an upper for instance.
What I should have said instead of "full" was "100%" as in already made, and considered a firearm by ATF, just like a completely machined lower for an AR.
I may be wrong, but Ive never hard of needing anything special to put parts into/onto a completed receiver.