Upper Receivers

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"And what country can preserve its liberties, if its rulers are not warned from time to time that this people preserve the spirit of resistance? Let them take arms... .The tree of liberty must be refreshed from time to time, with the blood of patriots and tyrants" - Thomas Jefferson

The Second Amendment to the United States Constitution is the part of the United States Bill of Rights that protects the right of the people to keep and bear arms. It was adopted on December 15, 1791, along with the rest of the Bill of Rights. This store helps you express your rights.

"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." - George Washington

"They tell us that we are weak - unable to cope with so formidable an adversary. But when shall we be stronger? Will it be when we are totally disarmed, and when a British guard shall be stationed in every house? Three million people, armed in the holy cause of liberty, are invincible by any force which our enemy can send against us." - Patrick Henry

Looking for Upper Receivers? We have them! Browse the categories to the left to find what you need!

US Gun Source
3999 Columbia St
Hilliard, OH 43026
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Advantage Arms Conversion Kit, 22LR, Fits Commander 1911, With Cleaning Kit, Black Finish, Target Sights 191122
Advantage Arms:
European American Armory Conversion Kit, 22LR, 4.5", 9MM & 40S&W Witness, 10Rd 10991
European American Armory:
CZ 75 Kadet Adapter II Conversion Kit, 22LR, 4.7" Barrel, For CZ75/CZ85, Adjustable Sights, Black Finish, 10Rd, 2 Magazines 0161
CZ:
Advantage Arms Conversion Kit, 22LR, 4.6" Barrel, Fits Glock 20/21, With Cleaning Kit, Black Finish AACLE20-2
Advantage Arms:
CMMG Upper, 9MM, 16" Barrel, Flat Top, A2 Front Sights, Black Finish 90B1AA
CMMG:
Advantage Arms Conversion Kit, 22LR, 4.49" Barrel, Fits Glock Generation 4 20, /21, With Cleaning Kit, Black Finish AAC20-21G
Advantage Arms:
CMMG Upper, 223 Rem/556NATO, 16" WASP Treated Barrel, 1:9 Twist, Flat Top, A2 Front Sights, Black Finish 55BE1F
CMMG:
Advantage Arms Conversion Kit, 22LR, Fits 1911, With Cleaning Kit, Black Finish, Target Sights AAC191122
Advantage Arms:
Bushmaster Upper, Optics Ready Carbine, 223 Rem/556NATO, 16"Barrel, 1:9 Twist, Flat Top, Black Finish 9219
Bushmaster:
Advantage Arms Conversion Kit, 22LR, 4.49" Barrel, Fits Glock 17/22, With Cleaning Kit, Black Finish AACLE17-2
Advantage Arms:
Spike's Tactical Upper, 223 Rem/556NATO, 16" FN Hammer Forged Barrel, Fits AR Rifles, Mid-length, Front Sight Post, Black Finish STU5435-ML
Spike's Tactical:
Smith & Wesson Upper, 223 Remington, 16" M4 Barrel, Bayonet Lug and A2 Birdcage, Black 81200
Smith & Wesson:
Spike's Tactical Upper, 223 Rem/556NATO, 14.5" FN Hammer Forged Barrel, Fits AR Rifles, Mid-length, Flat Top, Black Finish STU5420-ML
Spike's Tactical:
Smith & Wesson Upper, 556NATO, 16" Barrel, Black Finish, 5R Rifling, Quad Rail Handguard, A2 Birdcage, Magpul Folding Sights 81201
Smith & Wesson:
Smith & Wesson Upper, 556 NATO, 14.5" Barrel with pinned Vortex Brake, Troy TRX Extreme Handguard, Black Finish, Magpul Folding Sights 81201
Smith & Wesson:
DRD Upper U556, 223 Rem/556NATO, 16" Barrel, Billet Aluminum, Quick Detach Rail, Quick Change Barrel, Black Finish U556BI
DRD:
DRD Upper, 300 AAC Blackout, 16" Hammer Forged Barrel, Quick Detach Rail & Quick Change Barrel Without Bolt Carrier Group, Charging Handle, Black Finish U300BL
DRD:
Advantage Arms Conversion Kit, 22LR, 4.49" Barrel, Fits 9/40/357/45 GAP, Non-XDM Frames Only, With Cleaning Kit, Black Finish, 10Rd XD940-
Advantage Arms:
Advantage Arms Conversion Kit, 22LR, 3.46" Barrel, Fits Glock 26/27, With Cleaning Kit, Black Finish AACLE26-2
Advantage Arms:
CORE 15 Upper, 223 Rem/556NATO, 16" M4 Profile Barrel, A2Flash Hider, MOE Handguard, Flat Top, Black Finish, Magpul MOE Original Equipment 100273
CORE 15:
CORE 15 Upper, 223 Rem/556NATO, 16" M4 Profile Barrel, A2Flash Hider, Front Sight Base, Black Finish 10027
CORE 15:
CORE 15 Upper, 22LR, 16" M4 Profile Barrel, Front Sight Base, Black Finish 112
CORE 15:
CORE 15 Upper, MOE 300, 300 AAC Blackout, 16" Stainless Barrel, MOE Handguard, Flat Top, Black Finish 9924
CORE 15:
CORE 15 Upper, Tactical V.2 300, 300 AAC Blackout, 16" Stainless Barrel, Quad Rail, Flat Top, Black Finish 992
CORE 15:
DRD Upper, 223 Rem/556NATO, Billet, Stripped, Flat Top Sights, Black Finish UPPERBILA
DRD:
IWI US, Inc Tavor, Conversion Kit, 9MM, 17" Barrel, Black Finish, 32Rd, 1 Magazine TSK
IWI US, Inc:
Noveske Upper Basic, 223 Rem/556NATO, 16" Hammer Forged Barrel, 1:7 Twist, Mid-length, A2 Front Sights, Black Finish G1U-LRB-556/300BL
Noveske:
Rock River Arms Upper, Varmint, 223 Rem/556 NATO, 20" Barrel, 1:9Twist, Fits AR, Free Float Handguard, Black Finish AR055
Rock River Arms:
Rock River Arms CAR A4 Upper, 223 Rem/556NATO, 16" Barrel, 1:9 Twist, Black Finish, Mid-Length Handguard, A2 Flash Hider AR0874
Rock River Arms:
Spike's Tactical Upper, Law Enforcement, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, Flat Top, Chrome Lined, A2 Front Sights, Black Finish STU5025-M4
Spike's Tactical:
Spike's Tactical Upper, 223 Rem/556 NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, Flat Top, Four Rail Handguard, Chrome Lined, Black Finish STU5025-R9
Spike's Tactical:
Windham Weaponry Upper, HBC, 223 Rem/556NATO, 16" Heavy Barrel, Fits AR Rifles, Chrome Lined, A3 Carry Handle, BlackFinish UR16LH
Windham Weaponry:
Windham Weaponry Upper, SRC, 223 Rem/556NATO, 16" M4 Barrel With Bayonet Lug and A2 Birdcage Flash Hider, Fits AR Rifles, Chrome Lined, Flat Top, Black Finish UR16M4FT
Windham Weaponry:
Windham Weaponry Upper, 223 Rem/556NATO, 16" M4 Barrel, Bayonet Lug and A2 Birdcage, Fits AR Rifles, Chrome Lined Chamber, A3 Sights, Black Finish UR16M4LH
Windham Weaponry:
CMMG Target Upper, 22LR, 16" Barrel, 1:16 Twist, Flat Top KeyMod Free Float Handguard, Flat Top, Black 22B7CA
CMMG:
CMMG Upper, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Free Floating KeyMod Handguard, SV Brake, Flat Top Sights, Black 55B594
CMMG:
Yankee Hill Machine Co Upper, Entry Level Carbine Top End, 16" Barrel, 1:7 Twist, Fits AR Rifles, Black Finish YHM-7300-
Yankee Hill Machine Co:
Yankee Hill Machine Co Upper, Black Diamond Carbine Top End, 556NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, Black Finish, YHM Flip Front and Rear Sight YHM-7800-
Yankee Hill Machine Co:
Yankee Hill Machine Co Upper, Specter Black Diamond Carbine Top End, 556NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, Black Finish, YHM Flip Front and Rear Sight YHM-7810-
Yankee Hill Machine Co:
Yankee Hill Machine Co Upper, Black Diamond Specter XL Carbine Top End, 556NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, Black Finish, YHM Flip Front and Rear Sight YHM-7820-
Yankee Hill Machine Co:
Daniel Defense M4 Volume 9 Upper, Fits AR Rifles, 223 Rem/556NATO, 18" Hammer Forged Barrel, 1:7 Twist, with M4 15.0 Rail, Stainless Steel Finish 23-145-02196-04
Daniel Defense:
Daniel Defense M4 Volume 9 Upper, Fits AR Rifles, 223 Rem/556NATO, 16" HF Barrel, 1:7 Twist, Daniel Defense Furniture, with M4 15.0 Rail, Black Finish 23-145-18027-04
Daniel Defense:
Daniel Defense M4 Volume 9 Upper, Fits AR Rifles, 223 Rem/556NATO, 16" Hammer Forged Barrel, 1:7 Twist Lightweight Barrel, with M4 15.0 Rail, Black Finish 23-145-19025-04
Daniel Defense:
Daniel Defense M4 Volume 1 Light Weight Upper, Fits AR Rifles, 223 Rem/556NATO, 16" Hammer Forged Barrel, Daniel Defense Furniture, with M4 12.0 Rail, Black Finish 23-050-0822
Daniel Defense:
Spike's Tactical Upper, 223 Rem/556NATO, 16" (14.5" with Pinned Brake) Barrel, Fits AR Rifles, Black Finish, Flat Top Sights, Lightweight LE w/12" SAR3 w/Dynacomp Ext., Four Rail Handguard and No Mags STU5050-S2
Spike's Tactical:
Spike's Tactical Upper, Fits AR Rifles, Black, Flat Top Sights, Machined from a Mil-Spec 7075 T6 forging, with Forward Assist and Ejection Door installed SFT50M
Spike's Tactical:
Spike's Tactical Upper, Law Enforcement, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, Black Finish, M4 LE w/12" SAR Rail, with SAR Rail System and No Mags STU5025-S2
Spike's Tactical:
Spike's Tactical Upper, Law Enforcement, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, A2 Chokes, Black Finish, M4 LE w/7" SAR Rail & FSP, with SAR Rail System and No Mags STU5025-S7
Spike's Tactical:
Spike's Tactical Upper, Law Enforcement, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Fits AR Rifles, A2 Chokes, Black Finish, M4 LE w/12" SAR Rail, with SAR Rail System and No Mags STU5035-S2
Spike's Tactical:
Bravo Company Upper, Mil-Spec, 1913 Rail for Mounting Optics and Accessories, Flat Top, Black BCM4-UR-M
Bravo Company:
CMMG Upper Receiver, 556NATO, Fits AR, Flat Top Sights, Forward Assist and Ejection Door Installed, Black Finish 55BA22
CMMG:
CMMG MK4T Upper, 300 AAC Blackout, 16" Barrel, Fits AR, Flat Top, A2 Brake Chokes, CMMG RKM11 KeyMod Handguard, Black 30B129
CMMG:
CMMG MK4T Upper, 300 AAC Blackout, 16" Stainless Barrel, Fits AR, Flat Top, A2 Brake Chokes, CMMG RKM11 KeyMod Handguard, Black 30BC35
CMMG:
CMMG MK4T SBN Upper, Fits AR, 223 Rem/556NATO, 16" Barrel, A2 Brake, Flat Top, CMMG RKM11 KeyMod Handguard, Black 55BC76
CMMG:
PW Arms Upper, AR57LEM, 5.7x28mm, 16" Fluted Barrel, Black Finish, Lightweight, with Quad Rail AR57LEM-U
PW Arms:
Windham Weaponry Upper, VEX-SS, 223 Rem/556NATO, 20" Stainless Fluted Barrel, Flat Top, Black Finish UR20FSSFTV
Windham Weaponry:
Noveske Upper, N4 Light Recce Gen 3, 223 Rem/556NATO, 16" Hammer Forged Barrel, 1:7 Twist, Mid-Length Chamber, Fits AR Rifles, Black Finish, Flat Top Sights, with Quad Rail G3U-LRLP-55
Noveske:
CMMG MK3 Upper, 308 Win, 18" Stainless Barrel, Stainless Finish 38BCC3
CMMG:
CMMG MK3 3GR Upper, 308 Win, 18" Stainless Barrel, Stainless Finish 38BCCE
CMMG:
CMMG MK3 CBR Upper, 308 Win, 16" Stainless Barrel, Stainless Finish 38BEA9
CMMG:
Wilson Combat Upper, 300 Blackout, 16" Stainless Steel, Type 416R, Six Groove Barrel, 1:8 Twist, For AR-15, Complete Upper Assembly, Tactical Rail Interface 10.4", Accu-Tac Flash Hider, Flat Top, Black TR-300RC16U
Wilson Combat:
Advantage Arms Conversion Kit, 22LR, 4.49" Barrel, For 9/40/357/45GAP XDM Frames Only, Includes Cleaning Kit, Black, 10Rd XDM940-4
Advantage Arms:
Daniel Defense M4A1 Upper, 223 Rem/556NATO, 16" (14.5" with Pinned Brake) Barrel, 1:7 Twist, with M4 12.0 Rail, Flat Dark Earth Finish 23-004-1315
Daniel Defense:
Daniel Defense Upper, M4 Volume 11, 223 Rem/556NATO, 16" Lightweight Barrel, 1:7 Twist, Black Finish 23-151-02077-04
Daniel Defense:
CMMG Upper MK4LE, 300 AAC Blackout, 16" Barrel, 1:7 Twist, M16 Bolt Group, Railed Gas Block, Black 30BF85
CMMG:
CMMG Upper MK3 T, 308 Win, 16 " Barrel, 1:10 Twist, Billet Upper, RKM15 KeyMod Handguard, Black 38BEAA
CMMG:
Tactical Solutions Kestrel Upper , 22LR, Fits AR Rifles, w/Linear Compensator Black KESTRE
Tactical Solutions:
Silencerco Barrel, 9MM, For Glock 34, Black, 1/2x28 TPI AC86
Silencerco:
Silencerco Barrel, 9MM, For Glock 17L Longslide, Black, 1/2x28 TPI AC86
Silencerco:
Silencerco Barrel, 9MM, For Glock 19, Black, 1/2x28 TPI AC86
Silencerco:
Silencerco Barrel, 45 Auto, For Glock 21, Black, .578x28 TPI AC86
Silencerco:
Silencerco Barrel, 9MM, For Glock 17, Black, 1/2x28 TPI AC86
Silencerco:
LBE Unlimited M4 Stripped Upper Receiver, For AR15, Black ARSTU
LBE Unlimited:
Patriot Ordnance Factory ReVolt Upper, 223 Rem, 18" Fluted Barrel, 10Rd, Black 0075
Patriot Ordnance Factory:
Noveske Afghan Stainless Upper, 556NATO, 14.5" Barrel, Fits M4, Black Finish, Gunfighter Charging Handle Mod4, 14" SWS Quad Rail G1U-145LW-556-SW
Noveske:
Noveske Upper, 556NATO, 16" Hammer Forged Barrel, Fits M4, Black Finish, Light Recce, Gunfighter Charging Handle Mod4, w/Switchblock, 11.5" Split Rail, Trifecta Muzzle Break G1U-LRLP-556-S
Noveske:
LanTac USA LLC Upper Advanced Receiver, Milspec Type3, Class2 Deep Black Hardcoat Anodized, Includes CP-R360 DomedHead Cam Pin, Billet 7075-T6 Aluminum LA0022
LanTac USA LLC:
LWRC M6A2 Upper, 556NATO, 16" Barrel, Black Finish, Carbine Length Gas System, Fits AR Rifles, Skirmish Sights LWRCM6A2U5B16SIGHT
LWRC:
LWRC M6A2 Upper, 556NATO, 16", Black Finish, MidlengthGas System, Fits AR Rifles, Skirmish Sights LWRCM6A2U5B16STRETC
LWRC:
Spike's Tactical Upper, 223 Rem, 556NATO, 16" Barrel(14.5" with Pinned Brake), Fits AR Rifles, Lightweight LE w/13.2" BAR2 w/Dynacomp Ext., Four Rail Handguard and NoMagazines, Flat Top Sights, Black Finish TU5050-R3
Spike's Tactical:
Adaptive Tactical Venom Conversion Kit, Fits Mossberg 500 12 Gauge, Kit Includes 10Rd Box Mag, Wraptor Forend, Black Finish AT-0520
Adaptive Tactical:
CMMG Mk4 3GR Upper, 18" Barrel, RKM14 KeyMod Handguard, SV Brake, Black Finish 55B66C
CMMG:
Tactical Solutions Upper, 300 AAC Blackout, 11" (16.1" with Pinned Shroud) Barrel, Fits AR Rifles, Black Finish, Flat Top Sights, 10Rd, 1-10Rd Mag, Inert Suppressor, KeyMod Rail TSAR-300
Tactical Solutions:
Tactical Solutions Upper, 300 AAC Blackout, 11" (16.1" with Pinned Shroud) Barrel, Fits AR Rifles, Black Finish, Flat Top Sights, 10Rd, 1-10Rd Mag, Inert Suppressor, M-Lock Rail TSAR-300
Tactical Solutions:
Windham Weaponry MPC Upper, 223 Rem, 556NATO, 16" M4 Profile Barrel, Black Finish, Fits AR Rifles UR16M4A4
Windham Weaponry:
Spike's Tactical Gen 2 Billet Upper Receiver, 223 Rem/556NATO, Black Finish, Mil-Spec Barrel Nut SFT50B
Spike's Tactical:
Barrett Conversion Kit, 308 Win, 22" Fluted Barrel, Complete Barrel Assembly, Bolt, Bag, 10Rd, Needs MRAD Breech Kit BFM14674 1326
Barrett:
Barrett Conversion Kit, 308 Win, 17" Heavy Barrel, Complete Barrel Assembly, Bolt, Bag, 10Rd, Mag Needs MRAD Breech Kit BFM14674 1420
Barrett:
Barrett MRAD Breech Conversion Kit, Bolt Tube, Bolt Retaining Pin, Firing Pin Assembly, Front and Rear Bolt Tube Guides 1467
Barrett:
 

Upper Receivers Hilliard Ohio