Tell us more! Did you purchase this upper or build it? Was a Weaver style gas block installed on it? Does it have an M-4 Cut barrel cut on it? Are you shooting full power ammunition or sub sonic? What stock and buffer do you have on it?
The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
“Americans have the right and advantage of being armed. Unlike the people of other countries, whose leaders are afraid to trust them with arms.”
James Madison. Author of the 2nd Amendment