Battle Arms Development Authority Elite, 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 BAD-AUTH-UR16B-Y-15C

Battle Arms

Authority Elite

BAD-AUTH-UR16B-Y-15C

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, 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

CMMG Resolute MK4, Upper Receiver, 6MM ARC, 16.1 Barrel, Cerakote Finish, Armor Black 60B1091-AB

Cmmg

Resolute MK4

60B1091-AB

COLT LE6921 UPPER 556NATO 14.5

Colt

LE6921CK

Chiappa Firearms M422-Gen II Pro, Rifle Conversion, Upper Receiver, 22LR, 16 Heavy Barrel, 11.8 Forend, 8 Position Picatinny Rail, 2 Magazines, Black, 28Rd 500.095

Chiappa Firearms

M4-22 G2

500.095

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

DEYRA DY9 9MM COMPLETE UPR ISLAND BK

DERYA FIREARMS

Island Upper

UP-DY9ISL-AG

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 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 DDM4V7, Complete Upper, 223 Rem/556NATO, 16 Cold Hammer Forged Barrel, 1:7 Twist, Black, MLOK 23-128-02339-047

Daniel Defense

DDM4V7

23-128-02339-047

Daniel Defense Daniel Defense, DDM4 300 S, Complete Upper, 300 Blackout, 10.3 Cold Hammer Forged Barrel, 1:8 Twist, Black Finish, Includes Flash Suppressor, Grip-N-Rip Charging Handle 23-088-19020-047

Daniel Defense

23-088-19020-047

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

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

LanTac USA LLC USR, Upper Standard Receiver, 556NATO, AR-15, M4 Feed Ramps, Anodized Black 01-RV-UP-USR-SF15

Lantac Usa

USR

01-RV-UP-USR-SF15

Luth-AR 16 Lightweight Barrel Complete Upper Receiver, 223 Remington, Black Finish, 15 Palm Handguard Keymod, 1:9 Twist, Complete Barrel Assembly w/BCG, Fits AR-15 BAA3-L16

Luth-Ar

16 Lightweight Complete Upper

BAA3-L16

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 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

Luth-AR Upper, Black, 1913 Rail for Mounting Optics and Accessories, Forged, Flat Top, Comes with Charging Handle, Forward Assist, and Dust Cover FTT-EA1

Luth-Ar

Upper

FTT-EA1

Maxim Defense Industries PDX Complete upper, 556NATO, 5.5, Black, AR Rifles MXM-47813

Maxim Defense

PDX

MXM-47813

Maxim Defense Industries PDX Complete upper, 556NATO, 5.5, Flat Dark Earth (Arid), AR Rifles MXM-47812

Maxim Defense

PDX

MXM-47812

Maxim Defense Industries PDX, Complete Upper, 300 Blackout, 5.5 Barrel, Black Finish, Includes Mil-Spec BCG MXM-47827

Maxim Defense

PDX

MXM-47827

Midwest Industries Upper Receiver Rod, Black Oxide Finish, Holds Upper Receiver in Place MI-URR

Midwest Industries

Upper Receiver Rod

MI-URR