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

Stag Arms AR-15 A3 Stripped Upper Receiver, .223/5.56Mm, Type 3 Hard Coat Anodized, Right Hand, Black, STAG300264

Aero Precision AR-15 Assembled Upper Receiver, OD Green, APAR501663AC

American Tactical Imports AR-15 Stripped Poly Hybrid Upper Receiver, Black, ATIHUP200

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

Stag Arms AR-15 A3 Flattop Upper Receiver, Stripped, Direct Impingement, Type 3 Hard Coat Anodized, Left Hand, Black, STAG310264

Stag Arms AR-15 Covenant Right Hand Upper Receiver, 6Mm, 18in Barrel, BULL Profile, 1-7 Twist, 5/8-24 Thread, VG6 Gamma, Black, STAG15102301

XTS Complete Upper Receiver W/O BCG, AR-15, 223/5.56, 19.5In, 10.5In, Carbinel, Government, 1-7 Twist, 1/2X28 Thread, M-LOK, Bird Cage, Black Nitride Finish, XTS-CU-10BK

Stag Arms AR-15 A3 Flattop Upper Receiver Assembly, Direct Impingement, Type 3 Hard Coat Anodized, Right Hand, Black, STAG300412

OP Exclusive Moriarti AR-15 Upper Receiver, 300 Blackout, 10.5In, Pistol, Medium, M-LOK, 1-7 Twist, 5/8X24 Thread, Diamond Cut Free-Float Handguard, Slanted Muzzle Brake, Sniper Grey MAR-10-300-PENTA

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, OD Green, XTSCUBO10OD

Aero Precision AR-15 Assembled Upper Receiver, Kodiak Brown, APAR501664AC

Aero Precision AR15 Assembled Upper Receiver, Anodized Black, APAR501603AC

Aero Precision AR-15 Complete Upper Receiver, 5.56, Carbine Length, 16 Inch Barrel W/Pinned FSB, Magpul MOE SL Handguard, A2 Flash Hider, Anodized Black, APAR502505M64

Aero Precision M4E1 Threaded Assembled Upper Receiver, M16/AR-15, Magpul Cerakote, OD Green, APAR700417AC

Aero Precision M5 Threaded Assembled Upper Receiver, AR Platform, 22In, High Profile, 1-8 Twist, 5/8X24 Thread, Kodiak Brown, APAR308515AC

Tacfire Complete Upper Receiver, AR-15, Lower Parts Kit, 5.56Mm, 7.5in Barrel, Pistol Length, 7in M-LOK Handguard, Anodized, Black, PK556-LPK

Stag Arms AR-15 Covenant Left Hand Upper Receiver, 6Mm, 20in Barrel, BULL Profile, 1-7 Twist, 5/8-24 Thread, VG6 Gamma, Black, STAG15112401

Stag Arms AR-10 Long Range Left Hand Upper Receiver, 308 Winchester, 20in Barrel, HBAR-CMV Profile, 1-10 Twist, 5/8X24 Thread, VG6 Gamma, FDE, STAG10112442

Stag Arms AR-15 Covenant Left Hand Upper Receiver, 6Mm, 16in Barrel, BULL Profile, 1-7 Twist, 5/8-24 Thread, VG6 Gamma, Black, STAG15112201

XTS Complete Upper Receiver W/O BCG W/ 12in Rail, AR-15, 300 BO, 24.75In, 16in Barrel, Carbine, 1-8 Twist, 5/8X24 Thread, M-LOK, Bird Cage, Black Nitride Finish, XTSCU12300BK

Stag Arms AR-15 Tactical Upper Receiver, 5.56x45mm NATO, 16in Barrel, Hanson Profile, 1-7 Twist, 1/2X28, Left Hand, VG6 Gamma, Black, STAG15110144

Aero Precision AR15 XL Assembled Upper Receiver, FDE, APAR611320AC

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

Stag Arms AR-10 Long Range Right Hand Upper Receiver, 308 Winchester, 20in Barrel, NJ Compliant, HBAR-CMV Profile, 1-10 Twist, 5/8X24 Thread, VG6 Gamma, Black, STAG10100944

Aero Precision AR15 Stripped Upper Receiver - XL, Black, APAR611310C

Stag Arms AR-10 Tactical Left Hand Upper Receiver, 308 Win, 16in Barrel, NJ Compliant, TAC-GOV-CMV Profile, 1-10 Twist, 5/8X24 Thread, VG6 Gamma, FDE, STAG10111244

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

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

Bravo Company MFG Bravo Company AR-15/M4 Complete Upper Receiver Assembly, Flattop, Aluminum, Black, BCM4-UR-M4

Stag Arms AR-10 Long Range Right Hand Upper Receiver, 308 Winchester, 20in Barrel, NJ Compliant, HBAR-CMV Profile, 1-10 Twist, 5/8X24 Thread, VG6 Gamma, FDE, STAG10102444

Tiger Rock Low Profile Upper Receiver, AR-10/LR-308, Anodized Black, Black, Small, 308UP

Aero Precision M5 Threaded Assembled Upper Receiver, AR Platform, 22In, Low Profile, 1-8 Twist, 5/8X24 Thread, OD Green, APAR308631AC

Opticsplanet Exclusive Moriarti AR-9 Upper Receiver Assembly, 9mm Luger, 4.5In, M-LOK, 1-10 Twist, Diamond Cut Free-Float Handguard, Multiport Muzzle Brake, Anodized Black, MAR-9MM-4-DMD-BCGCH-BLK

Stag Arms AR-10 Long Range Right Hand Upper Receiver, 308 Winchester, 20in Barrel, HBAR-CMV Profile, 1-10 Twist, 5/8X24 Thread, VG6 Gamma, FDE, STAG10102442

Stag Arms AR-15 Covenant Right Hand Upper Receiver, 6Mm, 16in Barrel, BULL Profile, 1-7 Twist, 5/8-24 Thread, VG6 Gamma, Black, STAG15102201