Product Description
This is a new custom 5.56 NATO caliber (Also shoots .223 Remington) upper assembled using a forged aluminum mil-spec Aero Precision X-15 upper receiver in black annodiz finish. It has a 20" 1:7 twist, rifle length gas system, Modern Series American made Nitride barrel from Ballistic Advantage. It is threaded 1/2-28, and has a nice QUAD rail from NCStar and it's topped with a mil-spec flash suppressor. This upper receiver includea a nitride Aero Precision bolt carrier group and a mil-spec charging handle. All parts are new.