5.56x45mm NATO Upper Receivers

LWRC DI BILLET 5.56MM BLK 16.1" #

Cobalt Kinetics CK-Pro Urg Upper 5.56 11.5 Barrel

FightLite Industries DFX Upper 5.56 16.25 Threaded Barrel

Patriot Ordnance Factory Renegade Plus Upper 13.75 5.56 Direct Impingement Adjustable Gas Block

POF-USA AR-15 Renegade+ Complete Upper Receiver 5.56x45mm NATO 13.75" Pinned Barrel with Dead Air Adapter 13" M-LOK Handguard Black

Rock River Arms AR-15 Complete Upper Receiver 5.56x45mm 10.5" Barrel

Rock River Arms AR-15 R3 Competition Complete Upper Receiver 223 Wylde 18" Stainless Steel Barrel 15" M-LOK Handguard Black

Noveske Upper Complete Chainsaw 5.56 11.5 Commando SS 1/2X28

Noveske AR-15 N4 Micro Switchblock Complete Upper Receiver 5.56x45mm NATO 10.5" Barrel NSR-9.75 M-LOK Handguard Black

M4e1-T 223 Wyld Assembled Upper W/Proof Bbl & Mod 4 Handguard - M4e1-T 223 Wylde Assembled Upper 18'''' Heavy Proof Bbl Black

Aero Precision M4E1-T Barreled Upper Receiver 5.56x45mm NATO 16" Government Contour Barrel 15" Mod4 Handguard Olive Drab Green

Aero Precision A3 Flattop Assembled Left-Handed Upper Receiver

Aero Precision SM10.3 M4E1-T Complete Upper w/11.5in 5.56 Barrel Black

M4e1 Enhanced 5.56 Nato Assembled Upper Receiver For Ar-15 - M4e1 Enhanced 5.56mm Assembled Upper Rcvr For Ar-15 Kodiak

Aero Precision M4E1-T RM10.3 Complete Upper 5.56 x 45 12.5inch Government Carbine 1-7 Twist 1/2 x 28 Thread Cerakote FDE

Aero Precision M4E1 Threaded PRO 12.5" CHF 5.56 M-LOK Midlength Complete Upper

Aero Precision Complete Upper Receiver M4E1-T RM12.7 5.56x45mm NATO 13.9in Government Mid Length 1 in 7 1/2 x 28 12.7in A2 Flash Hider Anodized Black

Aero Precision M4E1-E AR15 5.56mm 8in M-LOK Upper Receiver Heavy Pistol Length 1-7 Twist 1/2x28 A2 Flash Hider 7.3in EM Handguard Anodized Black

AERO PRECISION M4E1-T-NO FA- Comp. Upper 10.5" 5.56 Carbine

Aero Precision M4E1 Enhanced Assembled AR-15 Upper Receiver No Forward Assist Flat Dark Earth

Aero Precision M4E1 Enhanced Assembled AR-15 Upper Receiver No Forward Assist Aluminum Black

Aero Precision AR15 Complete Upper 16" 5.56 Carbine Barrel w/ Pinned FSB M4 Handguard (Includes BCG & CH)

Aero Precision AR-15 16" 5.56 Complete Upper w/ Pinned FSB, MOE SL Carbine - FDE

AMERICAN TACTICAL IMPORTS Poly Hybrid Strip Upper Multi Sniper Grey