quote:
Questions:
If I were to order a pistol length upper with BCG and charging handle with a 10.5" (5.56) barrel and mate it with a standard lower, it would require an ATF stamp, right?
Yes. Putting a sub-16" barrel on anything other than a registered pistol lower or a registered SBR lower is a felony. In fact, just possessing the sub-16" barreled upper and standard lower without owning a registered pistol lower or registered SBR lower, constitutes intent, and is punishable in the same manner.
quote:
Now, if I were to do the same but attach to a pistol lower, it would not require a stamp, right?
A pistol upper, attached to registered pistol lower is just fine.
quote:
What about possession of a disassembled pistol upper and complete rifle lower?
As before, it is viewed as intent. And is a big no-no.
quote:
I fully intend on having eye guy build me a 300blk, SBR with a suppressor... I am just trying to figure out all the other rules if I start scooping up parts here and there, so I am not breaking the law.
TIA
Get a registered pistol lower to have around. You can use it to sit there while you gather parts. You can use it for turning into an SBR, or use another lower for that. but it is cheap insurance, so to speak.