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LBE Unlimited ARUPPER AR-15 Upper Receiver 5.56x45mm NATO 7075-T6 Aluminum Black Finish 0" Barrel
Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 13.70" Black Cerakote Upper Receiver Group - CKPROURG556137BLK
Gemtech 13833 Gvac Upper Receiver 5.56x45mm NATO 16.10", Black, 15" M-LOK Handguard, ETM Flash Hider, BCG Incl
FightLite Industries MCR556DFRM AR-15 Upper 5.56x45mm NATO 16.25" Black 7075-T6 Aluminum M-LOK Handguard
Fightlite Industries MCR060M Dual-Feed AR-15 Upper, 5.56x45mm NATO, 16.25" Barrel, Black Finish.
FightLite Industries MCR060 Dual-Feed AR-15/M16 Upper 5.56x45mm NATO 16.25" Black
Cobalt Kinetics CK-Pro 6.75" Stripped Upper Receiver Group - CKPROURG675SBLK
Fightlite Industries Raptor Belt AR-15 Upper 5.56x45mm NATO 16.25" Black M-LOK Finish RPTR-001
Sons of Liberty M489UPPER13.7556 M4-89 Upper 556 13.7