GC_UPC Aero Precision Complete Upper Receiver, M4E1 Threaded, 5.56, 16.3in Barrel, Gov Profile, Mid-Length GS, 1-7 Twist, 1/2 x 28, ATLAS R-ONE HG, VG6 Delta Flash Hider, Anodized Black, APUG700705M105-1 $776.99 APUG700705M1051 show more like this Free Shipping on most orders over $49 Optics Planet