do I need to wait 30 days?

[ar15barrels]

According to RifleSupply in Huntington Beach and RifleGear in Fountain Valley multiple lowers are allowed and they have been DROSing them. They both said they spoke with their attorneys and said they are ok. RifleGear said they actually contacted the DOJ and were told it is fine. They also mentioned a few local Turners were doing multiple stripped lowers as well.
I did 3 stripped aero lowers today.

Lowers without an upper on them are NOT centerfire or semi-auto so they most certainly would not fit the requirements of such a rifle that is limited to 1 per 30 days.