5.56x45mm NATO Upper Receivers

Geissele Super Duty AR-15 Barreled Receiver 5.56x45mm NATO 16" Barrel Black

Geissele Super Duty AR-15 Pistol Barreled Receiver 5.56x45mm NATO 11.5" Barrel Desert Dirt

Radian Weapons Model 1 Upper Flat Dark Earth 10 M-LOK Handguard

Radian Weapons Model 1 Complete Upper Gray .223 Wylde 16 Barrel

SilencerCo SCO15 Stripped Upper Receiver for AR-15

Aero Precision M4E1 Standard Stripped AR-15 Upper Receiver Aluminum Black

Aero Precision M4E1 Standard Assembled AR-15 Upper Receiver Aluminum Black

DPMS Kitty Kat Complete Upper 5.56 7.5 Threaded Barrel M4 Flattop

Geissele AR-15 Super Duty MOD1 Pinned and Welded Complete Upper Receiver 5.56x45mm 13.9" Cold Hammer Forged Barrel M-LOK DDC

AR-STONER AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 10.3" Barrel Carbine Length M-LOK Handguard

TacFire AR-15 Complete Upper 5.56 10.5 Threaded Barrel

GunTec AR-15 Upper Receiver Assembly Kit

Black Rain Ordnance Milled Upper Receiver Gen 2 Black

Maxim Defense PDX AR-15 Complete Upper Receiver 5.56x45mm 5.5" Barrel Black

Broadsword Billet Upper Receiver - Broadsword-89 Billet Stripped Upper Receiver Black

Colt Firearms LE6920 Complete Upper 5.56 NATO / .223 Rem 16 Barrel

Cobalt Kinetics CK-Pro Urg Complete Upper 5.56 16 Barrel

DPMS A2 UPPER 10.5 5.56

Noveske N4 Afghan Complete Upper 5.56 14.5 P&W Barrel

Noveske N4 Engraved AR-15 Ejection Port Cover Noveske Cross

Geissele Automatics Super Duty Stripped Upper Flat Dark Earth 5.56 16 Barrel

Radian Weapons Model 1 Upper OD Green 5.56 10 Handguard

Yankee Hill Machine 110-Billet Upper Stripped Upper

AERO PRECISION AR15 Complete Upper 16" 5.56 M4