SOLGW EAST INDIA KIT 5.56 14.5" BLK

Sons of Liberty Gun Works M4-76 5.56 Barreled Upper Receiver - 13.7"

TacFire AR-15 .223 / 5.56 Unassembled Upper Receiver Kit - 10"

Spikes Tactical Complete Upper Receiver, 223 Rem/556NATO, 14.5 in Barrel (16 in OAL with Pinned Brake), Mid-length Gas System, Fits AR Rifles, Black, Flat Top Receiver, No Sights, 12 in CRR Quad Rail, Dynacomp Muzzle Brake, No Mags STU5050-CQ2D

BUSHMASTER QRC Upper 5.56 NATO 16" - Black

SPIKE'S TACTICAL Midlength Complete 5.56x45mm NATO LE 16in AR-15 Upper Receiver With 12in CRR QUAD Rail (STU5035-CQ2F)

LBE Unlimited M4 Stripped Upper Receiver, Fits AR15, Black Finish ARSTUP

Spike's Tactical 223 Rem/556NATO 14.5" Mid-length Gas System 12" CRR Quad Rail Complete Upper Receiver (STU5050-CQ2D)