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Upper Builds by Caliber

Top Sellers

Davidson Defense 'Zara' 16
Davidson Defense 'Zara' 16" AR-15 .223 Wylde Nitride Full Build Kit
$629.99 $344.99
Davidson Defense 'Corncrake' 8.5
Davidson Defense 'Corncrake' 8.5" AR-15 9mm Nitride Full Build Kit
$704.99 $389.99
MMC 'Sperwer' 20
MMC 'Sperwer' 20" LR-308 .308 Win Nitride Rifle Full Build Kit
$909.99 $599.99
Davidson Defense 'Avathar' 16
Davidson Defense 'Avathar' 16" AR-15 .223 Nitride Rifle Complete Upper Build Kit
$574.99 $289.99
Davidson Defense 'Twardy' 20
Davidson Defense 'Twardy' 20" LR-308 .308 Win Nitride Rifle Full Build Kit
$864.99 $549.99
Davidson Defense 'Lightshow II - Purple' 16
Davidson Defense 'Lightshow II - Purple' 16" AR-15 5.56 NATO Nitride Rifle Full Build Kit
$644.99 $359.99
Davidson Defense 'Prudence' 11.5
Davidson Defense 'Prudence' 11.5" AR-15 5.56 NATO Nitride Pistol Complete Upper Build
$529.99 $244.99
MMC Arms 'Night Shift' 8
MMC Arms 'Night Shift' 8" AR-15 9mm Nitride Pistol Complete Upper Build
$454.99 $249.99
Davidson Defense 'Valiant' 16
Davidson Defense 'Valiant' 16" AR-15 9MM Nitride Full Build Kit
$669.99 $354.99
MMC Arms
MMC Arms "Silverstar" LR-308 Featuring Aero Precision M5 Style Upper 20" 6.5 Creedmoor 4150 CMV QPQ Nitride 1-8T Barrel 19" High Profile M-Lok Handguard (Assembled or Unassembled)
$859.99 $544.99
Bear Creek Arsenal Complete 20
Bear Creek Arsenal Complete 20" .243 Winchester Rifle Upper Assembly
$434.99 $394.99
Davidson Defense 'The Vampire V2' 16
Davidson Defense 'The Vampire V2' 16" AR-15 5.56 NATO Nitride Rifle Full Build Kit
$624.99 $339.99
Davidson Defense 'Bullet Farmer' 18
Davidson Defense 'Bullet Farmer' 18" LR-308 .308 Win Nitride Rifle Full Build Kit
$799.99 $484.99
Davidson Defense 'Doohickey' 16
Davidson Defense 'Doohickey' 16" AR-15 .223 Wylde Nitride Rifle Full Build Kit
$659.99 $374.99
Davidson Defense 'The Vampire V2' 16
Davidson Defense 'The Vampire V2' 16" AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$499.99 $214.99
Davidson Defense 'Twardy' 20
Davidson Defense 'Twardy' 20" LR-308 .308 Win Nitride Rifle Upper Build Kit
$649.99 $334.99

Manufacturer

  1. Home
  2. AR-15 & AR-10 Build Kits
  3. Upper Builds by Caliber
  • .22 Mag AR-15 Upper Builds .22 Mag AR-15 Upper Builds
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  • .300 Blackout AR-15 Upper Builds .300 Blackout AR-15 Upper Builds
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  • .308 Winchester LR-308/AR-10 Upper Builds .308 Winchester LR-308/AR-10 Upper Builds
  • 6.5 Creedmoor LR-308/AR-10 Upper Builds 6.5 Creedmoor LR-308/AR-10 Upper Builds

Products [1084]

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Davidson Defense
Davidson Defense"Dakota" AR-15 Pistol Upper Receiver 7.5" 5.56 NATO 4150 CMV 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$589.99 $369.99 Sale
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MMC Arms AR-15
MMC Arms AR-15 "Jackhammer" Rifle Kit .458 SOCOM 16" 4150 CMV Parkerized 1:14T HBAR Barrel Black Diamond Series 15" M-LOK Handguard
$614.99 $324.99 Sale
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Davidson Defense AR-15
Davidson Defense AR-15"Axe" Assembled Pistol Upper Receiver 7.5" 5.56 NATO Stainless 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$424.99 $229.99 Sale
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MMC Arms
MMC Arms"Tectonic" AR-15 Featuring Aero Precision Upper Receiver 16" .458 SOCOM 1-14T 4150 CMV Heavy Barrel 13.5" KeyMod Handguard (Assembled or Unassembled)
$499.99 $229.99 Sale
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MMC Arms Top Shelf
MMC Arms Top Shelf"Terrier" AR-15 Featuring A Davidson Defense Upper Receiver 16" KAK Industries 9MM 1-10T QPQ Nitride Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$489.99 $249.99 Sale
In Stock
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MMC Arms
MMC Arms"Bronco" AR-15 Featuring Aero Precision Upper Receiver 16" 5.56 NATO 1-8T QPQ Nitride Colt Competition Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$604.99 $319.99 Sale
In Stock
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Davidson Defense 'VHS' 7.5
Davidson Defense 'VHS' 7.5" AR-15 5.56 NATO Phosphate Pistol Upper Build Kit
$474.99 $189.99 Sale
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MMC Arms
MMC Arms"Scorcher" AR-15 Featuring Aero Precision Upper Receiver 18" Ultra-Match 6.5 Grendel 1-8T Stainless Heavy Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$479.99 $259.99 Sale
Out of Stock
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MMC Arms
MMC Arms"Raw" AR-15 Featuring Aero Precision Upper Receiver 16" .458 SOCOM 1-14T 4150 CMV Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$489.99 $264.99 Sale
In Stock
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MMC Arms
MMC Arms"Fiery Furnace" AR-15 Featuring Aero Precision Upper Receiver 16" .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$509.99 $309.99 Sale
Out of Stock
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MMC Arms
MMC Arms"Butch" AR-15 Featuring Aero Precision Upper Receiver 18" Ultra-Match .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 16.5" M-Lok Handguard (Assembled or Unassembled)
$504.99 $259.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense"Lil Titan" AR-15 Pistol Upper Receiver 7.5" 5.56 NATO 4150 CMV 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$484.99 $199.99 Sale
In Stock
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MMC
MMC "Battle Cry" 20" LR-308 6.5 Creedmoor Nitride Upper Build W/: Aero Precision and Helius Tactical
$649.99 $374.99 Sale
In Stock
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MMC Arms
MMC Arms "Arame" AR-15 Featuring Anderson Upper Receiver 16" .458 SOCOM 4150 CMV 1-14T Heavy Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$484.99 $259.99 Sale
In Stock
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Davidson Defense
Davidson Defense "Grackle" AR-15 Pistol Upper Receiver 4" 9MM QPQ Nitride 1-10T KAK Industries Barrel 4" M-Lok Handguard (Assembled or Unassembled)
$444.99 $209.99 Sale
In Stock
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MMC Arms
MMC Arms "Code Blue" LR-308 Featuring Aero Precision M5 Upper 24" Ultra-Match .308 WIN Stainless 1-10T Straight Fluted Heavy Bull Barrel 19" M-Lok Handguard (Assembled or Unassembled)
$674.99 $359.99 Sale
Out of Stock
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MMC Arms
MMC Arms "Solidus" LR-308 Featuring Aero Precision M5 Upper 24" Ultra-Match 6.5 Creedmoor Stainless 1-8T Straight Fluted Heavy Bull Barrel 19" M-Lok Handguard (Assembled or Unassembled)
$824.99 $499.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Nueve" 4" AR-15 9MM Nitride Pistol Upper Build Kit
$599.99 $349.99 Sale
In Stock
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MMC Arms
MMC Arms "Solidago" AR-15 Featuring Aero Precision Upper Receiver 16" .458 SOCOM 1-14T 4150 CMV Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$504.99 $304.99 Sale
Out of Stock
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MMC
MMC "Fulvous" 20" LR-308 6.5 Creedmoor Nitride Upper Build W/: Aero Precision and Helius Tactical
$689.99 $374.99 Sale
In Stock
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MMC Top Shelf
MMC Top Shelf "Dux" 8.5" AR-15 9MM Nitride Full Build Kit W/ Aero, Faxon
$569.99 $254.99 Sale
In Stock
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MMC Arms
MMC Arms "Loon" LR-308 Featuring Aero Precision M5 Upper 22" 6.5 Creedmoor 4150 CMV QPQ Nitride 1-8T Barrel 16.5" M-Lok Handguard (Assembled or Unassembled)
$644.99 $319.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Forsaken" AR-15 Upper Receiver 18" .350 Legend 4150 CMV 1-16T Heavy Barrel 13.5" M-Lok Handguard (Assembled or Unassembled)
$484.99 $289.99 Sale
Out of Stock
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Ace High Arms
Ace High Arms "Devilfish" AR-15 Upper Receiver 16" .458 SOCOM 4150 CMV Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$479.99 $239.99 Sale
In Stock
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1 2 3 4 5 6 7 ...46 Next Page View All
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