So, if I understand this correctly, as long as I have a 10 round mag, I can install a bullet button on my AR-15 and this makes it legal?
Do I have to ensure it's an off-brand lower, or can I simply convert the mag release button on my Colt lower? From what I've read, it sounds like, even if I convert my Colt lower, it's still illegal because it's made by Colt. But logic would suggest that makes absolutely no sense, so I want to ensure I'm understanding this correctly.
Thanks!
Do I have to ensure it's an off-brand lower, or can I simply convert the mag release button on my Colt lower? From what I've read, it sounds like, even if I convert my Colt lower, it's still illegal because it's made by Colt. But logic would suggest that makes absolutely no sense, so I want to ensure I'm understanding this correctly.
Thanks!

But I miss it dearly, and recently discovered this "bullet button" shenanigans that magically make it legal. 
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