Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 16 Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Black, Includes Bad Rack-15 Ambidextrous Charging Handle and AR15/M16 BCG WH-UR16B-Y-15

Battle Arms

Authority Elite

WH-UR16B-Y-15

Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 16 Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Black, Includes Bad Rack-15 C Ambidextrous Charging Handle and AR15/M16 BCG WH-UR16B-Y-15C

Battle Arms

Authority Elite

WH-UR16B-Y-15C

Battle Arms Development WORKHORSE, Upper Receiver Assembly, 223 Remington/556NATO, 16 Barrel, Mid-length Gas System, Anodized Finish, Black, A2 Flash Hider, WORKHORSE 15 M-LOK Free Float Handguard, Does Not Include Bolt Carrier Group or Charging Hand

Battle Arms

Workhorse

WH-UR-16-556

Battle Arms Development XIPHOS Upper Receiver, Stripped, 9MM, Anodized Finish, Black, Billet 7075-T6 Aluminum Construction BAD-PCC-UR

Battle Arms

XIPHOS Upper Receiver

BAD-PCC-UR

Bootleg Billet Upper, Upper, Black, AR15 BP-UR-1A

Bootleg

Billet Upper

BP-UR-1A

COLT LE6921 UPPER 556NATO 14.5

Colt

LE6921CK

Colt's Manufacturing Complete Upper, 223 Rem/556NATO, 11.5 Lightweight Barrel, Black Finish, A2 Fixed Front Sight, Magpul BUIS Rear Sight LE6933CK

Colt

Complete Upper

LE6933CK

Daniel Defense Complete Upper Receiver, MK18 URG, 556NATO, 10.3 Hammer Forged Barrel, 1:7 Twist, Flat Top Receiver, Flat Dark Earth Finish 23-004-08013-011

Daniel Defense

MK18

23-004-08013-011

Daniel Defense DD4 RIIIS, Complete Upper Receiver, 556NATO, 11.5 Barrel, 1:7 Twist, Daniel Defense RIS III 10.5 Handguard, M16 Profile Bolt Carrier Group, Anodized Finish, Black/Flat Dark Earth 23-191-02397-011

Daniel Defense

DD4 RIIIS

23-191-02397-011

Daniel Defense DDM4V7 Lightweight, Complete Upper, 223 Rem/556NATO, 16 Lightweight Barrel, 1:7 Twist, Black Finish, MLOK 23-128-02932-047

Daniel Defense

DDM4V7 LW

23-128-02932-047

Daniel Defense DDM4V7 S Complete Upper Receiver Group, 556NATO, 11.5 Barrel, 1:7 Twist, Daniel Defense MFR 10 MLOK Handguard, Bolt Carrier Group, Charging Handle, Daniel Defense Vertical Grip, Black 23-128-00275-047

Daniel Defense

DDM4V7 S

23-128-00275-047

Daniel Defense M4A1, Upper, Complete Upper Receiver, 556NATO, 14.5 Pinned (16 OAL), Daniel Defense M4A1 FSP Rail Interface System Rail, Carbine Length Gas System, Surefire SF3P Flash Hider, M16 Profile Bolt Carrier Group, Anodized Finish, Flat Dark E

Daniel Defense

M4A1

23-004-09376

FightLite (MCR) Mission Configurable Rifle, Complete Upper Receiver, 556NATO, 12.5 Threaded Barrel, Dual Feed, Picatinny Rail, Fits AR-15 Lower Receiver, Anodized Finish, Black MCR-060S

FiteLite

Mission Configurable Rifle

MCR-060S

FightLite (MCR) Mission Configurable Rifle, Milspec Complete Upper Receiver, 556NATO, 16.25 Threaded Barrel, Dual Feed, Picatinny Rail, Dry Film Lubrication, Fits AR-15 Lower Receiver, Anodized Finish, Black MCR-556-DFR

FiteLite

Mission Configurable Rifle

MCR-556-DFR

FightLite Mission Configurable Rifle Dual-Feed Upper Receiver Assembly, 556NATO, 12.5 Quick-Change Barrel, Threaded 1/2X28, Fits AR-15 Lower Receiver, M-LOK Handguard, Adjustable Sight Set, Manganese Phosphate Finish, Black, Includes Buffer, Spacer,

Fightlite

MCR-060MS

FightLite Mission Configurable Rifle Dual-Feed Upper Receiver Assembly, 556NATO, 12.5 Quick-Change Barrel, Threaded 1/2X28, Fits AR-15 Lower Receiver, M-LOK Handguard, Adjustable Sight Set, Manganese Phosphate Finish, Black, Includes Buffer, Spacer,

Fightlite

MCR-556-DFRM

FightLite Mission Configurable Rifle, 556NATO, 16.25, Black MCR-060

FiteLite

Mission Configurable Rifle

MCR-060

FightLite Mission Configurable Rifle, 556NATO, 16.25, Black MCR-060M

FiteLite

Mission Configurable Rifle

MCR-060M

Heckler & Koch MR762 A4 Upper Receiver, 308 Winchester/762NATO, 13 Barrel, Threaded 5/8X24, M-LOK Handguard, Anodized Finish, Black, Adjustable Gas Block, Includes Bolt Carrier Group, Buffer Weight, and Buffer Spring 51001919

Heckler & Koch

MR762 A4 Upper Receiver

51001919

KAK Industry AR-15 Upper Completion Kit, Phosphate Finish, Black KAR-KT-18

KAK Industry

AR-15 Upper Completion Kit

KAR-KT-18

Luth-AR 24 Bull Barrel Complete Upper Assembly, 223 Remington, Black Finish, 15 Palm Handguard Keymod, Complete Barrel Assembly w/BCG, Fits AR-15 FTBL-B24

Luth-Ar

24 Bull Barrel Complete Upper

FTBL-B24

Luth-AR A1 Assembled Upper Receiver, Black, Forged, A1 Rear Sight Base Assembly, Ejection Port Cover Assembly, Teardrop Forward Assist Assembly, Brass Deflector UR-01A

Luth-Ar

A1

UR-01A

Luth-AR A3 Upper Receiver Parts Kit URPK-A3

Luth-Ar

A3 Upper Receiver Parts Kit URPK-A3

URPK-A3

Luth-AR Stripped NC15 Forged 308 Upper Receiver, Manufactured from 7075-T6 Aluminum, Hard-Coat Anodized, Features Upper Picatinny Rail for Mounting Optics and Accessories 308-FTT-EA

Luth-Ar

Upper

308-FTT-EA

Luth-AR Stripped NC15 Forged Upper Receiver, Manufactured from 7075-T6 Aluminum, Hard-Coat Anodized, Features Upper Picatinny Rail for Mounting Optics and Accessories FTT-EA

Luth-Ar

Stripped NC15 Forged Upper Receiver

FTT-EA