i've been thinkin

[customaquatics]

are those AR pistol uppers able to fit on the rifle lowers?

[5.56RifleGuy]

Yeah, but not without a tax stamp and the correct paper work, unless you want some jail time.

[customaquatics]

no i know im not able to since i live in the communist state :) but i didn't know if the recievers or watever was a different size.

[Art Eatman]

Question answered. :)