Real Avid Lug-Lok AR-10 Upper Receiver Vise Block

Aero Precision M4E1 Upper Receiver, AR-15, 5.56x45mm NATO, 7 in M-LOK Handguard, No BCG/Charging Handle, Magpul Cerakote, Flat Dark Earth, APAR640212M0

Stag Arms AR-10 Stag 10 Upper Receiver, Assembly, .210 DPMS High Profile, Left Hand, Cerakote, FDE, STAG310880

Stag Arms AR-15 Tactical Upper Receiver, 5.56x45mm NATO, 10.5in Barrel, GOV-CMV Profile, 1-7 Twist, 1/2X28, Left Hand, VG6 Delta, Black, STAG15110422

Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, Magpul Cerakote, Flat Dark Earth, APAR640222M2

Aero Precision Anodized Black AR15 Stripped Upper Receiver, Multi-Caliber 7075-T6 Aluminum, Black Anodized, APAR501603C

Aero Precision M4E1 Complete Upper Receiver, AR-15, 18 in Rifle Length Barrel, 15 in M-LOK Handguard, No BCH/CH, Anodized, Black, APAR640251M8

Guntec USA AR-15 Complete 5.56 Upper Receiver W/O Lower Parts Kit, N.6, 15in Air-Lok M-Lok Handguard, MLS Gen 2 Stock Assembly, Carbine Length, .750 Gas Block, 16in 5.56mm M4 4150 Barrel, 1-7 Twist, 1

Aero Precision AR-15 Complete Upper Receiver, 5.56, Carbine Length, 10.5 Inch Barrel W/Pinned FSB, Magpul MOE SL Handguard, A2 Flash Hider, FDE Cerakote, APAR502506M3

Aero Precision M4E1 Threaded Assembled Upper Receiver, M16/AR-15, Magpul Cerakote, Sniper Grey, APAR700272AC

Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 14.5 in Mid Length Barrel, 12 in Quad Rail Handguard, No BCG/CH, Anodized, Black, APAR640231Q5

Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in Quad Rail Handguard, No BCH/CH, Magpul Cerakote, Flat Dark Earth, APAR640222Q2

Aero Precision AR-15 Complete Upper Receiver, 5.56, Carbine Length, 10.5 Inch Barrel W/Pinned FSB, Magpul MOE SL Handguard, A2 Flash Hider, Anodized Black, APAR502505M3

Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, Anodized, Black, APAR640221M2

Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 14.5 in Mid Length Barrel, 12 in M-LOK Handguard, No BCG/CH, Magpul Cerakote, Flat Dark Earth, APAR640232M5

Aero Precision AR-15 Complete Upper Receiver, 5.56, Carbine Length, 10.5 Inch Barrel W/Pinned FSB, Magpul MOE Handguard, A2 Flash Hider, Anodized Black, APAR502503M3

AT3 Tactical AR-15 Slick Side Billet Upper Receiver, FDE, AT3-UPPER-FDE

Aero Precision AR-15 Complete Upper Receiver, 5.56, Mid-Length, 16 Inch Barrel W/Pinned FSB, Magpul MOE SL Handguard, A2 Flash Hider, Anodized Black, APAR502505M65

Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 16 in Mid Length Barrel, 12 in Quad Rail Handguard, No BCG/CH, Anodized, Black, APAR640231Q7

Stag Arms AR-15 Tactical Upper Receiver, 5.56x45mm NATO, 7.5in Barrel, GOV-CMV Profile, 1-7 Twist, 1/2X28, Left Hand, VG6 Delta, Chromephos, FDE, STAG15111921

Guntec USA AR-15 5.56 Upper Receiver W/O Lower Parts kit,n.2,15in Ultralight M-LOK Handguard,MLS Gen 2 Stock Assembly,Carbine ,.750 Gas block,16in 5.56mm M4 4150 Barrel,1-7 Twist, FDE, AR556-KIT-2

Aero Precision AR-15 Complete Upper Receiver, 5.56, Mid-Length, 16 Inch Barrel W/Pinned FSB, Magpul MOE Handguard, A2 Flash Hider, Anodized Black, APAR502503M65

Guntec USA AR-15 Stripped Billet Upper Receiver w/15in Ultralight Series M-Lok Handguard, Anodized Green, GT-UPPER-SET-GREEN-15MLK

Guntec USA AR-15 Complete 5.56 Upper Receiver W/O Lower Parts Kit, N.1, 15in Ultralight M-Lok Handguard, MLS Gen 2 Stock Assembly, Carbine Length, .750 Gas Block, 16in 5.56mm M4 4150 Barrel, 1-7 Twist

AIM Sports Inc Complete AR Pistol Upper Receiver W/ BCG, 5.56 NATO, 10.5in Barrel, M4 Profile, Carbine, 1-8 Twist, 1/2X28 Thread, 10M-LOK Free Float Handguard, A2 Birdcage Flash Hider, Nitride, Black, AR5CUB8

Stag Arms AR-15 Tactical Upper Receiver, .300 AAC Blackout, 8in Barrel, GOV-CMV Profile, 1-7 Twist, 1/2X28, Left Hand, VG6 Delta, Black, STAG15112122

Aero Precision AR-15 Complete Upper Receiver, 5.56, Carbine Length, 10.5 Inch Barrel W/Pinned FSB, Magpul MOE Handguard, A2 Flash Hider, FDE Cerakote, APAR502504M3

Guntec USA AR-15 Stripped Billet Upper Receiver w/9in Ultralight Series M-Lok Handguard, Flat Dark Earth, GT-UPPER-SET-FDE-9MLK

Guntec USA AR-15 9mm Cal Complete Upper Receiver Combo Kit, Black, GT-UPPER-9-KIT

Guntec USA AR-15 Stripped Billet Upper Receiver w/12in Ultralight Series M-Lok Handguard, Purple, GT-UPPER-SET-PURPLE-12MLK

Aero Precision M4E1 Threaded Assembled Upper Receiver, M16/AR-15, Anodized, Black, APAR700201AC

Aero Precision AR15 Complete Upper Receiver, 16in 5.56 Mid-Length Barrel W/ Pinned Front Sight Base, M4 Handguard, Black, APAR505631

Guntec USA AR-15 Complete 5.56 Upper Receiver W/O Lower Parts Kit, N.5, 15in Ultralight Series M-Lok Handguard, MLS Gen 2 Stock Assembly, Carbine Length, .750 Gas Block, 16in 5.56mm M4 4150 Barrel, 1-

OP Exclusive Moriarti AR-15 Upper Receiver Assembly, 5.56X45mm, 10.5In, Carbine, Government, M-LOK, 1-7, 1/2X28, Diamond Cut Free-Float Handgrd, A2 Flash Hider, Cerakote, Burnt Bronze, MAR-10-556-BB

Aero Precision M4E1 Threaded Assembled Upper Receiver, M16/AR-15, Magpul Cerakote, Flat Dark Earth, APAR700202AC

Guntec USA AR .308 Stripped Billet Upper Receiver w/15in Ultralight Series M-Lok Handguard, Black, GT-UPPER-SET-BLK-15MLK-308