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

Stag Arms AR-10 Long Range Right Hand Upper Receiver 6.5 Creedmore 24in Barrel NJ Compliant HBAR-CMV Profile 1-10 Twist 5/8X24 Thread VG6 Gamma FDE

VISM AR10 Upper Receiver Block Blue VTHAR10UVB

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 Flat Dark Earth

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

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

Tiger Rock Complete Upper Receiver, AR-15, 5.56 NATO, 16in Carbine Length, 1-8 Twist w/10in M-LOK Handguard, Black, Large, UB15-10ML

AT3 Tactical AR-15 Slick Side Billet Upper Receiver, Black, AT3-UPPER-1

Stag Arms AR-15 Tactical Left Hand Upper Receiver, 5.56 NATO, 16in Barrel, Hanson Profile, 1-7 Twist, 1/2 X 28 Thread, VG6 Delta, Nitride, Black, STAG15110142

Tiger Rock AR-15 Complete Upper Receiver, 5.56Mm, 24In, 16in Barrel, M4, Carbine, 1X8 Twist, 1/2X28 Thread, Quad Rail, 15in M-Lok Handguard, Brake, Nitride, Anodized, Black, UB15-15ML

Stag Arms AR-10 Tactical Left Hand Upper Receiver, 308 Win, 16in Barrel, TAC-GOV-CMV Profile, 1-10 Twist, 5/8X24 Thread, VG6 Gamma, FDE, STAG10111242

Andro Corp Industries AR-15 Complete M-LOK Upper Receiver With Flash Hider Assembly W/Fmark Front Sight Base, 5.56 NATO, 24.75In, 16in Barrel, M4, Carbine Length, 1-7 Twist, 1/2X28 Thread, A2, Anodized, Black, U55616CFSBM4

Guntec USA AR-15 Upper Receiver Assembly Kit, Trap Door Assembly, Cerakote Flat Dark Earth, GT-URK-FDE

Stag Arms AR-15 Tactical Right Hand Upper Receiver, 5.56 NATO, 16in Barrel, Hanson Profile, 1-7 Twist, 1/2 X 28 Thread, VG6 Gamma, Black, STAG15100144

Guntec USA AR-15 Complete 9mm Upper Receiver, Mil-Spec Charging Handle, 4 Inch M-Lok Handguard, 5.5 Inch Contour 4150 Barrel, 1-10 Twist, 1/2X36 Mini Socom Muzzle Device, Black, 9MM-KIT-4

Stag Arms AR-10 Stag 10 Upper Receiver, Assembly, .210 DPMS High Profile, Left Hand, Type 3 Hard Coat Anodized, Black, STAG310044

OP Exclusive Moriarti AR-15 Pencil Upper Receiver Assembly, 5.56x45mm NATO, 16In, Mid, M-LOK, 1-7 Twist, 1/2X28 Thread, Diamond Cut Free-Float Handgrd, Tri Port Muzzle Brake, Black, MAR-5.56-16-12-TRI

Moriarti Complete Upper Receiver, AR-9, 9Mm, 4.5 Inch Barrel, Straight Profile, 1-10 Twist, 1/2X36 Thread, M-LOK Handguard, Multiport, Anodized Black, Black, MAR-9MM-4-DMD-CH-BLK

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

XTS Complete Upper Receiver W/O BCG, AR-15, 300 BO, 19.5In, 10.5In, Pistol, 1-8 Twist, 5/8X24 Thread, M-LOK, Bird Cage, Black Nitride Finish, Purple, XTSCUBO10PP

Aero Precision M4E1 Complete Upper Receiver, AR-15, 18 in Rifle Length Barrel, 15 in Quad Rail Handguard, No BCH/CH, Anodized, Black, APAR640251Q8

Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18In, Wylde SS QPQ Rifle Length, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M73

Luth-AR 11.5 in Light Weight Complete Upper Barrel Receiver Assembly - 5.56 1X7 Twist, K-Mod Free Float Handguard, Black, 11.5, BA-11-7K

ABC RIFLE COMPANY AR-15 .223 remington/5.56x45mm NATO Pistol 7in Barrel Custom 7in Top Cut Hybrid M-LOK Handguard Complete Upper Receiver W/BCG And Charging Handle, Sniper Grey, UA15-BR7-TCABC7-SG

ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol 5in Barrel M-LOK Handguard Upper Receiver W/BCG And Charging Handle, White, UA300-BR5-ML4D-STW

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 AR15 Complete Upper, 16in 5.56 M4 Carbine Barrel W/ Pinned FSB, M4 Handguard ,Includes BCG & CH, Anodized Black, APAR505721

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-

Stag Arms AR-10 Marksman Left Hand Upper Receiver, 6.5 Creedmore, 22in Barrel, BULL Profile, 1-10 Twist, 5/8X24 Thread, VG6 Gamma, Black, STAG10110511

ABC RIFLE COMPANY AR-15 .223 remington/5.56x45mm NATO Micro Pistol 5in Barrel M-LOK Handguard Upper Receiver W/BCG And Charging Handle, Robbin's Egg Blue, UA15-BR5-ML4D-RB

CMMG Mk4/AR-15 Upper Receiver Assembly, Armor Black, 55BA290-AB

Rock River Arms Completed Upper Receiver, Elite Carbine A4 .223/5.56Mm, 16 Inch Barrel, 1-9 Twist, Mid-Length Profile, 1/2-28 Thread, A2 Flash Hider, Black, AR0831B

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

Presma AR-15 223/5.56 Stripped Upper Receiver W/Square Mark, Black, UPR01

Outerwild AR15 Complete Premium Upper Receiver Billet, .223 Wylde, 16In, 1-7 Twist, 15in M-LOK Handguard, Black Anodize, 4027-3410-025-O

Wilson Combat Upper Receiver, 5.56x45mm NATO, AR-15, Mil-Spec, Anodized, Black, TR-UPPER