Spikes Tactical Upper 5.56 14.5in 16in OAL Midlength Lightweight LE w/12in SAR3 Rail w/ Dynacomp STU5050-S2D. 56 Midlength Lightweight Forged 14.5in Upper Receiver. These AR15 Upper Receivers brought to you by Spikes Tactical are crated from 7075 T6...