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"The best we can hope for concerning the people at large is that they be properly armed." - Alexander Hamilton

Our company is passionate about supplying all your gun and outdoor needs. We offer exceptional customer service to ensure that your questions are answered and you are able to find exactly what you are looking for.

We have all your Upper Receivers supplies! In stock and ready to ship! Don't forget the pouches or cases.

"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

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.

Our company is committed to providing you with the very best in Upper Receivers. We are there for you. Our quality and selection will leave you completely satisfied.

US Gun Source
3999 Columbia St
Hilliard, OH 43026
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CZ 75 Kadet Adapter II Conversion Kit, 22LR, 4.7" Barrel, For CZ75/CZ85, Adjustable Sights, Black Finish, 10Rd, 2 Magazines 0161
CZ:
Phoenix Conversion Kit, 22LR, 5" Barrel, Fits HP22/HP22A Nickel HP22BBL
Phoenix:
Phoenix Conversion Kit, 22LR, 5" Barrel, Fits HP22/HP22A Blue HP22BBL
Phoenix:
CMMG Upper, 9MM, 16" Barrel, Flat Top, A2 Front Sights, Black Finish 90B1AA
CMMG:
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, 1-10Rd Magazine AAC191122
Advantage Arms:
Bushmaster Upper, Optics Ready Carbine, 223 Rem/556NATO, 16"Barrel, 1:9 Twist, Flat Top, Black Finish 9219
Bushmaster:
Bushmaster Upper, Predator, 223 Rem/556NATO, 20" Fluted Barrel, Flat Top, Black Finish 9245
Bushmaster:
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:
Bushmaster Upper M4A3 , 223 Rem/556NATO, 16" Barrel, Bayonet Lug and A2 Birdcage Flash Hider, Flat Top, Black Finish, Complete Barrel Assembly w/BCG 9182
Bushmaster:
Advantage Arms Conversion Kit, 22LR, 4.49" Barrel, Fits Glock Generation 4 19/23, With Cleaning Kit, Black Finish, Standard Sights, 1-10Rd Magazine AAC19-23G
Advantage Arms:
Advantage Arms Conversion Kit, 22LR, 4.49" Barrel, Fits Springfield Armory XD 9/40, Non-XDM Frames Only, Does Not Fit 3" Sub-compact, With Cleaning Kit, Black Finish, 10Rd, 1-10Rd Magazine XD940-
Advantage Arms:
Core Rifle Systems Upper, 223 Rem/556NATO, 16" M4 Profile Barrel, A2Flash Hider, Front Sight Base, Black Finish 10027
CORE 15:
IWI US, Inc SAR, Conversion Kit, 9MM, 17" Barrel, Black Finish, 32Rd, 1 Magazine TSK
IWI US, Inc:
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, Black Finish 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:
Chiappa Firearms Upper, M4-22 Gen II Pro, 22LR, 16" Heavy Barrel, 7.8" Forend, 8 Position Picatinny Rail, 2 Magazines, Black, 10Rd 500-09
Chiappa Firearms:
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, 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:
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, 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/12" SAR Rail, with SAR Rail System and No Mags STU5035-S2
Spike's Tactical:
CMMG Upper Receiver, 556NATO, Fits AR, Flat Top Sights, Forward Assist and Ejection Door Installed, Black Finish 55BA22
CMMG:
Midwest Industries Forged Upper, No Barrel or BCG, Black Finish MI-FC
Midwest Industries:
CMMG MK4T Upper, 300 AAC Blackout, 16" Barrel, Fits AR, Flat Top, A2 Brake Chokes, CMMG RKM11 KeyMod Handguard, Black 30B129
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 MLOK Rail AR57LEM-U
PW Arms:
Windham Weaponry Upper, VEX-SS, 223 Rem/556NATO, 20" Stainless Fluted Barrel, Flat Top, Black Finish UR20FSSFTV
Windham Weaponry:
CMMG Mk3 Complete Upper, 308 Win, 18" Stainless Steel Heavy Taper Barrel, RKM15 KeyMod Handguard, Black Finish, Mk3 Bolt Carrier Group 38BCC3
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, Fits Springfield Armory XDM 9/40, XDM Frames Only, 3.8" Compact Requires Mag Extension, Includes Cleaning Kit, Black, 10Rd, 1-10Rd Magazine XDM940-4
Advantage Arms:
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:
SilencerCo Threaded Barrel, 9MM, For Sig P226, Black, 1/2x28 TPI AC85
Silencerco:
SilencerCo Threaded Barrel, 9MM, For Glock 17L Longslide, Black, 1/2x28 TPI AC86
Silencerco:
SilencerCo Threaded Barrel, 9MM, For Glock 19, Black, 1/2x28 TPI AC86
Silencerco:
SilencerCo Threaded Barrel, 45 ACP, For Glock 21, Black, .578x28 TPI AC86
Silencerco:
LBE Unlimited M4 Stripped Upper Receiver, Fits AR15, Black Finish ARSTU
LBE Unlimited:
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:
Spike's Tactical Gen 2 Billet Upper Receiver, 223 Rem/556NATO, Black Finish, Mil-Spec Barrel Nut SFT50B
Spike's Tactical:
Black Rain Ordnance Milled Upper Receiver, 223 Rem/556NATO, Flat Top Sights, Black Finish BRO-MUR-
Black Rain Ordnance:
Seekins Precision Integrated Rail Mounting Technology, Billet Upper, 223 Rem/556NATO, Black Finish 001090000
Seekins Precision:
Seekins Precision iRMT-3 V3, Billet Upper, 223 Rem/556NATO, Only Fits SP3R V3 Rail, Black Finish, Only Compatible w/Seekins Precision SP3R V3 Rail 001090001
Seekins Precision:
DPMS Upper, Oracle, 556NATO, 16" Barrel, Fits AR-15, Flat Top, Black Finish 6058
DPMS:
Spike's Tactical Upper, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Black Finish, Mid-length Gas System, Mid-length Handguard, Front Sight Post, A2 Flash Hider STU5035-ML
Spike's Tactical:
CMMG Target Upper, 22LR, 16" Barrel, 1:16 Twist, Flat Top KeyMod Free Float Handguard, Flat Top, Black Finish, No Magazines Included 22B7CA
CMMG:
CMMG Conversion Kit, Bravo, Fits AR Rifles, 22LR, 10Rd 22BA62
CMMG:
CMMG AR Conversion Kit, 22LR, Stainless Steel Bolt Group, 3 Magazines, 10Rd 22BA6A
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 Upper, 300 AAC Blackout, 16" M4 WASP Treated Barrel, Front Sight Base, Black Finish 30BF8C
CMMG:
CMMG MK3 3GR Upper, 308 Win, 18" Stainless Barrel, Stainless Finish 38BCCE
CMMG:
Seekins Precision Billet Upper, 223 Rem, Black Finish 001090000
Seekins Precision:
Adaptive Tactical Venom, Conv Kit, 12Ga, Black, Kit Includes 10Rd Drum Mag, Standard Forend and Stock, Mossberg SE-590 Series, 10Rd AT-0390
Adaptive Tactical:
Yankee Hill Machine Co Stripped A3 Upper Receiver, For AR15, Black Finish YHM-11
Yankee Hill Machine Co:
VLTOR VIS-KM Fusion Polylithic Upper with 12" KeyMod Handguard, Shell Deflector and Forward Assist, Hard Coat Anodized Finish, Black, Includes Barrel Nut, Does Not Include Bolt or Barrel VIS-F1
VLTOR:
VLTOR VIS-KM Fusion Polylithic Upper with 7" KeyMod Handguard, Shell Deflector and Forward Assist, Hard Coat Anodized Finish, Black, Includes Barrel Nut, Does Not Include Bolt or Barrel VIS-F
VLTOR:
VLTOR VIS-KM Fusion Polylithic Upper with 9" KeyMod Handguard, Shell Deflector and Forward Assist, Hard Coat Anodized Finish, Black, Includes Barrel Nut, Does Not Include Bolt or Barrel VIS-F
VLTOR:
CZ P-07 Kadet Adapter Conversion Kit, 22LR, 3.8" Barrel, Fits CZ P-07 Only, Black Finish, 2-10Rd Magazines 0161
CZ:
Black Rain Ordnance SPEC15 Stripped Upper, Forged, 223 Rem/556NATO, Black Finish BRO-SPEC15-U
Black Rain Ordnance:
Ruger 9MM Conversion Kit, Black Finish, 1 Mag, Fits LC380, Fixed Sights, 7Rd 9049
Ruger:
Tactical Solutions TSG-22, Conv Kit, 22LR, Black, 10Rd Magazine, Threaded, Fits Glk 19, 23 TSG-22 19/23 T
Tactical Solutions:
Seekins Precision NOXs Billet Upper, 223 Rem/556NATO, 16" Barrel, Black Finish 1110006
Seekins Precision:
Nordic Components 22RB 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 carrier group when upper is separate from lower) 22RB-UPPER-16-KI
Nordic Components:
Nordic Components Complete Upper, .223 WYLDE/556NATO, 16" Black Coated Stainless Steel Barrel, 1:8 Twist, Black Finish, NC Flash Hider, NC Non-adjustable Low-profile .750 Dia Gas Block, NC-3 Freefloat M-LOK Handguard NC15U-223-16BK-X
Nordic Components:
Nordic Components Complete Upper, .223 WYLDE/556NATO, 18" Black Coated Stainless Steel Barrel, 1:8 Twist, Black Finish, NC Flash Hider, NC Non-adjustable Low-profile .750 Dia Gas Block, NC-3 Freefloat M-LOK Handguard NC15U-223-18BK-X
Nordic Components:
Nordic Components Complete Upper, 300 AAC Blackout, 16" Black Coated Stainless Steel Barrel, 1:8 Twist, Black Finish, NC Flash Hider, NC Non-adjustable Low-profile .750 Dia Gas Block, NC-3 Freefloat M-LOK Handguard NC15U-300-16BK-X
Nordic Components:
DPMS Upper, 223 Rem, 556NATO, Black, A2 6058
DPMS:
DPMS Oracle, Upper, 308 Win, 16" Barrel, A2 Flash Hider, Flat Top, Black Finish 6060
DPMS:
Colt's Manufacturing Upper, 223REM/556NATO, Black Finish, Dust Cover, Forward Assist, M4 Feed Ramps SP6352
Colt's Manufacturing:
Midwest Industries Upper, .223 WYLDE, 556NATO, .223, 16" Nitride Barrel, 1:8 Twist, Light Weight M-Lok Rail, 2 Port MI Muzzle Brake, Black Finish (BCG and Charging handle not included) MI-LW16M
Midwest Industries:
Midwest Industries Upper, .223 WYLDE, 556NATO, .223, 16" Nitride Barrel, 1:8 Twist, 14" G3 M-Lok Rail, 2 Port MI Muzzle Brake, Black Finish (BCG and Charging Handle Not Included) MI-N16
Midwest Industries:
Midwest Industries Upper, .223 WYLDE, 556NATO, .223, 16" Nitride Barrel, 1:8 Twist, 15" G3 M-Lok Rail, 2 Port MI MuzzleBrake, Black Finish (BCG and Charging Handle Not Included) MI-N16M1
Midwest Industries:
Nordic Components NC15 Stripped Upper, Extruded, Fits AR15, Black Finish, Slick-side Upper Receiver Eliminates Dust Cover and Forward Assist for Reduced Weight and Cleaner Lines, Compatible with Milspec BCGs/Charging Handles/Handguards, Flat Top Picatinny Rail, 7029-T6 Aluminum NC15-UR-EX
Nordic Components:
Phase 5 Weapon Systems P5T15 Upper, 223 Rem/556NATO, 16" 4150 Chrome Lined Barrel, 1:8 Twist, Black Finish, MLOK, 15" LPSN M-LOK Quad Rail, A.R.M.S. 71L Flip Up Sight Set, Electroless Nickel(EN) M16 Bolt Carrier Group, Ambidextrous Battle Latch Charging Handle Assembly (ABL/CHA), FATman Hex Brake MLOKCOMPLETEUPPE
Phase 5 Weapon Systems:
DPMS Oracle Rifle Kit, 223 Rem, Black, Less Lower Receiver, Fits AR Rifles 6068
DPMS:
KE Arms Stripped Upper, Forged, 223 Rem/556NATO, Black Finish, w/Forward Assist and Dust Cover, M4 Feed Ramps and T-Marked 1-50-03-00
KE Arms:
Nordic Components Stripped NC15 Forged Upper Receiver, Manufactured from 7075-T6 Aluminum, Type III Hard-Coat Anodized, Features Upper Picatinny Rail for Mounting Optics and Accessories, Forward Assist and Dust Cover Assembly Not Included NC-15-A
Nordic Components:
Bootleg Complete Upper Receiver For AR 15, Lightweight, Black Finish, 6.2oz BP-U
BOOTLEG:
CZ P-09 Kadet Adapter Conversion Kit, 22LR, 4.5", Black, Target Style Adjustable Sights, 2-10Rd Magazines 0161
CZ:
Core Rifle Systems Upper, MLOK Handguard, 223 Rem/556NATO, 16" Barrel, 1:9 Twist, Flat Top, Black Finish 1397
CORE 15:
LBE Unlimited Upper, Black Finish, Forward Assist/Ejection Port Cover Assembly Installed, Fits AR15 ARUPPE
LBE Unlimited:
Desert Tech Hard Target Interdiction Caliber Conversion Kit, Includes, .50BMG, 29" Stainless Steel, Hand Lapped, Threaded, Fluted Precision Barrel w/ 1-15 Twist, 5Rd Magazine, Telescoping Bolt Assembly, Installed Muzzle Brake With Thread Protector. Kit Installs In 60 Seconds With Return To Zero DT-HTI-CK-
Desert Tech:
Desert Tech Stealth Recon Scout A1 COVERT Caliber Conversion Kit. Includes, .300Win Mag, 18" Stainless Steel, Hand Lapped, Threaded Precision Barrel With 1-8 Twist, 5Rd Black Ice Coated Magazine, Telescoping Bolt Assembly, Kit Installs In 60 Seconds With Return To Zero & 1/2 MOA Accuracy Guarantee DT-SRS-CK-BB
Desert Tech:
Desert Tech Stealth Recon Scout A1 Caliber Conversion Kit. Includes: .300Win Mag, 26" Stainless Steel, Hand Lapped, Threaded Precision Barrel With 1-10 twist, 5Rd Black Ice Coated Magazine, Telescoping Bolt Assembly, Kit Installs In 60 Seconds With Return To Zero & 1/2 MOA Accuracy Guarantee DT-SRS-CK-BD
Desert Tech:
Desert Tech Stealth Recon Scout A1 Caliber Conversion Kit. Includes: .308Win, 22" Stainless Steel, Hand Lapped, Threaded Precision Barrel With 1-11 Twist, 6Rd Black Ice Coated Magazine, Telescoping Bolt Assembly, Bolt Stop Assembly, Kit Installs In 60 seconds WWith Return To Zero & 1/2 MOA Accuracy Guarantee DT-SRS-CK-CC
Desert Tech:
Desert Tech Stealth Recon Scout A1 Caliber Conversion Kit. Includes, .308Win, 26" Stainless Steel, Hand Lapped, Threaded Precision Barrel w/ 1-11 Twist, 6Rd Black Ice Coated Magazine, Telescoping Bolt Assembly, Bolt Stop Assembly. Kit Installs In 60 Seconds With Return To Zero & 1/2 MOA Accuracy Guarantee DT-SRS-CK-CD
Desert Tech:
Desert Tech Stealth Recon Scout A1 Caliber Conversion Kit, Includes, .338Lapua Mag, 18" Stainless Steel, Hand Lapped, Threaded Precision Barrel With 1-9 twist, 5Rd Black Ice Coated Magazine, Telescoping Bolt Assembly, Installed Muzzle Brake, Kit Installs In 60 Seconds With Return To Zero & 1/2 MOA Accuracy Guarantee DT-SRS-CK-GB
Desert Tech:
Desert Tech Stealth Recon Scout A1 Caliber Conversion Kit. Includes: .338Lapua Mag, 26" Stainless Steel, Hand Lapped, Threaded Precision Barrel With 1-10 Twist, 5Rd Black Ice Coated Magazine, Telescoping Bolt Assembly, Installed Muzzle Brake. Kit Installs In 60 Seconds With Return Tto Zero & 1/2 MOA Accuracy Guarantee DT-SRS-CK-GD
Desert Tech:
Seekins Precision Barrel, 300 Blackout, 8", Black Finish, Stainless, Match Grade, 5R 416S, 1X8 1012000
Seekins Precision:
Seekins Precision Barrel, .223 WYLDE, 10.5", Black Finish, Stainless, Match Grade, 5R 416S, 1X8 1012000
Seekins Precision:
Seekins Precision Barrel, 300 Blackout, 10.5", Black Finish, Stainless, Match Grade, 5R 416S, 1X8 1012000
Seekins Precision:
Seekins Precision Barrel, .223 WYLDE, 14.5", Black Finish, Stainless, Match Grade, 5R 416S, 1X8 1012001
Seekins Precision:
Nordic Components Barrel, 300 Blackout, 10.5", 1:8 Twist, Black Teflon Finish, M4 Feed Ramps, Pistol-length Gas Port, 5/8X24 BBL-105P-300-CY-BL
Nordic Components:
Nordic Components Barrel, 223 Rem/556NATO, 11.5", 1:7 Twist, Black Finish, M4 Feed Ramps, Carbine Length Gas Port, 1/2X28 BBL-115-55
Nordic Components:
Nordic Components Barrel, 300 Blackout, 16", 1:8 Twist, Black Teflon Finish, M4 Feed Ramps, Carbine-length Gas Port, 5/8X24 BBL-16C-300-CY-BL
Nordic Components:
Radical Firearms Complete Upper Assembly, 223 Rem/556NATO, 16" SOCOM (Mid) Barrel, 15" RPR, Zero Impulse Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group CFU16-5.56SOC-15RPR-Z
Radical Firearms:
Radical Firearms Complete Upper Assembly, 6.5 Grendel, 20" Barrel, 15" RPR, Pepper Pot Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group CFU20-6.5-SS-MED-15RP
Radical Firearms:
  

Upper Receivers Hilliard Ohio