5.56x45mm NATO Upper Receivers & Conversion Kits

Battle Arms Development Authority Elite Complete Upper 5.56 16 Barrel M-Lok Handguard

Sons Of Liberty Gun Works M4-L89 Upper Receiver Group 5.56 14.5 P&W Barrel

SONS OF LIBERTY GUN WORKS M4-L89 Upper Recvr 5.56 14.5" MidGas P&W HUXWRX

Luth-AR AR-15 Lightweight Upper Receiver 5.56 NATO 16 Barrel

Colt Firearms LE6920EPRII Complete Upper 5.56 16.1 Barrel

FightLite Industries DFX Upper 5.56 16.25 Threaded Barrel

CMC Triggers AR-15 Stripped Upper Receiver 5.56

CMMG Bravo Rimfire AR-15 Conversion Kit with 3 10-Round Magazines 22 LR Stainless Steel

Daniel Defense AR-15 M4A1 FSP Block II Complete Upper Receiver 5.56x45mm 14.5" Pinned Surefire SF3P Flash Hider

Wilson Combat Upper Receiver

Yankee Hill Machine Stripped AR-15 A3 Upper Receiver Aluminum Black

FightLite Industries MCR556DFRM Dual Feed Complete Upper Receiver 5.56x45mm 16.25" Barrel M-LOK Handguard

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 16" Cold Hammer Forged Barrel M-LOK Black

FightLite Industries MCR Mission Configurable Rifle Complete Upper 5.56 16.25 Threaded Barrel w/ 100 M27 Links

FightLite Industries Mission Configurable Rifle Upper 5.56 16.25 Barrel

Luth-AR A2 Stripped Upper Receiver 5.56 / .223 Rem

Luth-AR AR-15 A1 Upper Receiver Assembled

Sharps Bros Assembled AR-15 Billet Upper Receiver Aluminum Black

Fortis Manufacturing Billet M4 Upper 5.56 NATO/.223 Rem Stripped For AR-15

Radian Weapons Model 1 Upper Flat Dark Earth 5.56 14 Handguard

Radian Weapons Model 1 Complete Upper Flat Dark Earth .223 Wylde 14.5 Barrel

Radian Weapons Model 1 Upper/Handguard Set 8.5

LanTac Upper Standard Receiver 5.56 NATO / .223 Rem M4 Feed Ramps for AR-15

Luth-AR A1 Stripped Upper Receiver With M4 Feed Ramp