You will need to have your Trust name and city engraved on the lower before you assemble to SBR.
When I did my first one I sent the lower off for engraving. When it came back I put it together as a pistol to function test. Then sent the Form 1 off to the ATF.
The two I am waiting on now, I sent the Form 1 off first, and will wait until it comes back before I assemble the lowers.
Yes, since you have to put the original manufacturer on the Form 1, you will need a lower on hand prior to submitting the Form 1. I have been using IdentMarking for mine.Thanks for the info. A couple more questions please. If I send off the Form 1 first, I still need to have a lower on hand because you have to put manufacturer on the form, correct? Isn't there a real good engraver just outside of Austin, Round Rock?