I'm planning out my first AR build and I had a question about how buying from an out of state manufacturer works. I'm looking at Spike's complete lowers but it doesn't look like they have an option to add a bullet button. Will a FFL release the lower to me without the BB installed?
I have tried searching the threads and wasn't able to find any thing. Thanks in advance.
I have tried searching the threads and wasn't able to find any thing. Thanks in advance.

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