Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 10.5 Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Black, Includes Bad Rack-15 C Ambidextrous Charging Handle and AR15/M16 BCG WH-UR10.5B-Y-15C

Battle Arms

Authority Elite

WH-UR10.5B-Y-15C

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, Milspec Complete Upper Receiver, 556NATO, 12.5 Threaded Barrel, Dual Feed, Picatinny Rail, Dry Film Lubrication, Fits AR-15 Lower Receiver, Anodized Finish, Black MCR-556-DFRS

FiteLite

Mission Configurable Rifle

MCR-556-DFRS

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-556-DFRM

FightLite Mission Configurable Rifle Dual-Feed Upper Receiver Assembly, 556NATO, 16.25 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

MCR-556-DFRM

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

FiteLite

Mission Configurable Rifle

MCR-060M

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 A3 Upper Receiver Parts Kit URPK-A3

Luth-Ar

A3 Upper Receiver Parts Kit URPK-A3

URPK-A3

Midwest Industries Upper Receiver Rod, Black, Upper Receiver Tool, Steel MI-308URR

Midwest Industries

Upper Receiver Rod

MI-308URR

NcSTAR AR10 Upper Receiver Block, For use with AR-10, Anodized Finish, Blue VTHAR10UVB

Ncstar

AR10 Upper Receiver Block

VTHAR10UVB

Nordic Components 22RB Complete Upper, 22LR, 16 Match Grade Barrel, 1:16 Twist, Black Finish, A2 Flash Suppressor, Aluminum Slim Diameter Handguard, Stainless Steel Bolt, 10Rd Black Dog Magazine, Black Dog Machine Bolt Saver (for retaining bolt carri

Nordic Components

22RB

22RB-UPPER-16-KIT

Nordic Components NC15 Extruded Stripped Upper, Fits AR15, Black Finish, Upper Receiver Eliminates Dust Cover and Forward Assist, Compatible with Milspec BCGs/Charging Handles/Barrels/Most Handguards, Flat Top Picatinny Rail, 7029-T6 Aluminum, Weight

Nordic Components

NC15 Extruded Stripped Upper

NC15-UR-EXT

Primary Weapons Systems MK116 MOD 2-M, Upper Receiver, 762x39, 16.1 Barrel, Triad30 Muzzle Device, Anodized Finish, Black, Radian Raptor Charging Handle, MLOK Handguard, Fits AR-15 MK1-M2U-762X39-16

Primary Weapons Systems

MK116

MK1-M2U-762X39-16

Primary Weapons Systems MK116 MOD 2-M, Upper Receiver, Fits AR-15, 223 Wylde, 16.1 Barrel, 1:8 Twist, FSC 556 Muzzle Device, 15 PWS PicLok MLOK Handguard, Anodized Finish, Black, Includes Radian Raptor Ambidextrous Charging Handle MK1-M2U-223-16

Primary Weapons Systems

MK116

MK1-M2U-223-16

Primary Weapons Systems MMK116 MOD 1-M, Upper Receiver, 762X39, 16.1 Barrel, Triad30 Muzzle Device, Anodized Finish, Black, Radian Raptor Charging Handle, MLOK Handguard, Fits AR-15 MK1-M1U-762X39-16

Primary Weapons Systems

MK116

MK1-M1U-762X39-16

Radian Weapons Complete Upper, 223 Wylde, 17.5 Barrel, 1:8 Twist, Dead Air KeyMo Flash Hider, Intermediate Length Gas, 17 MLOK Handguard, Radian Raptor-SD Charging Handle, Radian Enhanced Bolt Carrier Group, Cerakote Finish, Olive Drab Green, Fits AR

Radians

Complete Upper

R0481

Radian Weapons Upper/Handguard Set, Cerakote Finish, Black, Fits AR-15, Includes 10 MLOK Handguard, Radian Raptor-SD Charging Handle R0195

Radians

Upper/Handguard Set

R0195

Rise Armament Complete Upper, 22 ARC, 18 Stainless Steel Barrel, 1:7 Twist, 1/2x28 Threaded, Rifle Length Gas System, 15.25 Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Anodized Finish, Black RA-22ARC-CU

Rise Armament

RA-22ARC-CU-BLK-18

Rise Armament Complete Upper, 6MM ARC, 18 Stainless Steel Barrel, 1:7 Twist, 1/2x28 Threaded, Rifle Length Gas System, 15.25 Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Anodized Finish, Black RA-6ARC-CU

Rise Armament

RA-6ARC-CU-BLK-18

Rise Armament Complete Upper, 6MM ARC, 18 Stainless Steel Barrel, 1:7 Twist, 1/2x28 Threaded, Rifle Length Gas System, 15.25 Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Cerakote Finish, Patriot Brown RA

Rise Armament

RA-6ARC-CU-BRN-18

San Tan Tactical STT-15, Upper, 223 Rem, 556NATO, Black, FT STT-PILLAR-1

San Tan Tactical

STT-15

STT-PILLAR-1

Spike's Tactical Flat Top Upper w/Ejection Port Door, 9MM, Black Finish SFT902D

Spike'S Tactical

Flat Top Upper w/Ejection Port Door

SFT902D

Spike's Tactical Generation 2, Billet, Upper, 223 Remington, 556NATO, Black, Mil-Spec Barrel Nut SFT52B2

Spike'S Tactical

Generation 2

SFT52B2

Spike's Tactical Upper, Fits AR Rifles, Black, Flat Top, Machined from a Mil-Spec 7075 T6 forging, with Forward Assist and Ejection Door installed SFT50M4

Spike'S Tactical

Upper

SFT50M4