Spike's Tactical Upper, Fits AR Rifles, Black, Flat Top, Machined from a Mil-Spec 7075 T6 forging, with Forward Assist and Ejection Door installed SFT50M4
Bravo Company AR-15/M4 Complete Upper Receiver AssemblyBuilt to the correct Mil-Specs. Inside Diameter for barrel extension slightly undersized for a tighter fit to the barrel and a more accurate...