I picked up number 2 in a round about way.
I originally bought a second upper in a private sale. The lower is only considered the firearm by the clown shown know as the ATF. So I bought it online. Then I took my spare and sent it to Black Hole Weaponry for a polygonal barrel. I had them put the A2 sights on it, including the 8/3 knob as that is correct for the round in the short barrel.
I originally bought a second upper in a private sale. The lower is only considered the firearm by the clown shown know as the ATF. So I bought it online. Then I took my spare and sent it to Black Hole Weaponry for a polygonal barrel. I had them put the A2 sights on it, including the 8/3 knob as that is correct for the round in the short barrel.