Is that really a thing? Because I want to do it now.
Yes, and those uppers are expensive as fuck.
How expensive as fuck are we talking?
They start at $5,000 and go up to around 8k. They're meant for Title III full auto ARs, but they also make them for semis, which is pointless unless you plan on pairing it with a binary.
Financially speaking, you're better off buying a full auto M11/9 and getting a 5.56 Lage upper to pair it with.
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