Midwest Industries Upper Receiver Rod, For AR-15 Barrels, Black, MI-URR

Midwest Industries Upper Receiver Rod, For AR10, .308 Barrels, Black, MI-308-URR

Aero Precision Complete Upper Receiver, M5E1, 24in Barrel, 6.5mm Creedmoor, Rifle Length, 1-8 Twist, 416R Stainless Steel, EM15 Handguard, FDE Cerakote, APAR308556M71

Wilson Combat Complete Upper Receiver, Super Sniper, .223 Wylde, 20 Inch Barrel, Rifle Length, 1-8 Twist, 1/2X28 Thread, M-LOK Handguard, Q-COMP, Armor-Tuff, Black, TR-UF223SSR20FQ8B

Aero Precision Complete Upper Receiver, M4E1-T, 5.56x45mm NATO, 16In, Government, Mid Length, 1 in 7, 1/2 X 28, 12.7In, A2 Flash Hider, Cerakote, FDE, APAR700714M7

Grid Defense Complete Upper Receiver, 5.56Mm, 16 Inch, Carbine Length, 4150 M4 Barrel, 1-7 Twist, 14 Inch M-LOK Rail, A2 Flash Hider, OD Green, GD16E14GFR556OD

Aero Precision Complete Upper Receiver, M4E1-T, 5.56x45mm NATO, 11.5In, Government, Carbine Length, 1 in 7, 1/2 X 28, 10.3In, A2 Flash Hider, Anodized, OD Green, APAR700396M29

Aero Precision M5 Complete Upper Receiver, 16in .308 SS Mid Barrel, W/ATLAS S-ONE 15in M-LOK Handguard, Anodized, Black, APAR538105M23

Alexander Arms Tactical Upper Receiver, AR-15, 6.5mm Grendel, 18 Inch Barrel, 1-8 Twist, 5/8X24 Thread, A2 Flash Hider, Black Anodized, UTA-65-10RD

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, Cerakote, FDE, APAR700714M99

Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver, 10In, 1-7 Twist, 5/8X24 Thread, ATLAS R-ONE Handguard, Black Anodized, APAR700702M4

Aero Precision M4E1 Complete Upper Receiver, 16In, 5.56, M4, Carbine Barrel, EQ-15 HG Gen 2, Anodized Black, APAR640251Q6

Aero Precision M5 Complete Upper Receiver, 18in .308 SS Rifle Barrel, W/ATLAS S-ONE 15in M-LOK Handguard, Anodized, Black, APAR538105M26

Aero Precision M5 Complete Upper Receiver, 16in .308 CMV Mid Barrel, W/ATLAS S-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538115M22

ABC RIFLE COMPANY AR-15 7.62x39mm M-LOK Handguard Complete Pistol Upper Receiver W/BCG And Charging Handle, 1-10 Twist, 5/8X24, A2 Style Muzzle Brake, Nitride, Bronze, UA762-BR7.5-ML7D-BB

Aero Precision Complete Upper Receiver, M4E1, 10.5In, 5.56 Barrel W/ FSB, EQ-7 HG Gen 2, FDE Cerakote, APAR640212Q3

Tacfire Stripped AR-15 5.56x45mm NATO Upper Receiver, Black Anodized, UP01C2

Aero Precision M4E1 Complete Upper Receiver, 18In, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Cerakote, FDE, APAR640252M42

Stag Arms AR-15 Covenant Left Hand Upper Receiver, 6Mm, 18in Barrel, BULL Profile, 1-7 Twist, 5/8-24 Thread, VG6 Gamma, Black, STAG15112301

TAPCO AR Hook Cleaning Rod Guide & Upper Receiver Strut

Lead & Steel Just As Good Upper Receiver Group, 16in Barrel, 1-7 Twist, Olive, JAG-16-URG-ODG

Rock River Arms Forged A2 Upper Receiver Assembly, Black, AR0052AASY