Stay the fuck away from Radical Firearms. My brother purchased his first AR from this company. He didn't know shit about AR's back then, and so he called me when he discovered aluminum shavings coming out of the chamber. I went by and opened the rifle up, it was a fucking fiesta! Aluminum confetti flying everywhere.
They were then awesome enough to tell him that the BCG rubbing against the inner wall of the upper was "normal break-in." I shit you not. When he called bullshit, they made him pay for the shipping back to them. They sent it back, claimed it was "fixed." Turns out, they didn't do anything. Still got shavings, they were just less, which was because we were "breaking it in," giving that BCG enough clearance to run! LMAO!!
When he demanded a refund, they fought him a little bit, but ended up making him pay to ship the shit box back to them, and they finally gave him a refund.
TL;DR rifle was shit, customer service was worse, buy a Palmetto State or Anderson rifle if you have a limited budget.