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Complete Upper Build Kits


Save 10% on upper and full build kits
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Top Sellers

Davidson Defense 'Avathar' 16
Davidson Defense 'Avathar' 16" AR-15 .223 Nitride Rifle Complete Upper Build Kit
$574.99 $289.99
Bear Creek Arsenal Complete 20
Bear Creek Arsenal Complete 20" .243 Winchester Rifle Upper Assembly
$434.99 $394.99
Davidson Defense 'Kabocha' 4
Davidson Defense 'Kabocha' 4" AR-15 9mm Nitride Pistol Complete Upper Build Kit
$554.99 $239.99
MMC Arms 'Darjeeling' AR-15 Rifle Complete Upper Build Kit Featuring Davidson Defense Upper .223 Wylde 17
MMC Arms 'Darjeeling' AR-15 Rifle Complete Upper Build Kit Featuring Davidson Defense Upper .223 Wylde 17" 416R Stainless Steel 1-8T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$584.99 $299.99
Davidson Defense 'Heysel' 16
Davidson Defense 'Heysel' 16" AR-15 9MM Nitride Complete Upper Build Kit
$594.99 $279.99
Davidson Defense 'La Grande' 24
Davidson Defense 'La Grande' 24" LR-308 6.5 Creedmoor Stainless Rifle Complete Upper Build
$614.99 $409.99
Davidson Defense 'Lunar Jetman' 18
Davidson Defense 'Lunar Jetman' 18" AR-15 .350 Legend Nitride Rifle Complete Upper Build
$594.99 $309.99
Davidson Defense 'Prudence' 11.5
Davidson Defense 'Prudence' 11.5" AR-15 5.56 NATO Nitride Pistol Complete Upper Build
$529.99 $244.99
Davidson Defense 'Athos' 11.5
Davidson Defense 'Athos' 11.5" AR-15 5.56 NATO Nitride Pistol Complete Upper Build
$544.99 $259.99
Davidson Defense 'Prejudice' 8.5
Davidson Defense 'Prejudice' 8.5" AR-15 9mm Nitride Pistol Side Charging Complete Upper Build Kit
$614.99 $299.99
Davidson Defense 'Rodeo' 16
Davidson Defense 'Rodeo' 16" AR-15 .223 Wylde Stainless Rifle Complete Upper Build
$554.99 $349.99
Davidson Defense 'Toldi II' 7.5
Davidson Defense 'Toldi II' 7.5" AR-15 7.62x39 Pistol Nitride Complete Upper Build Kit
$629.99 $314.99

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  • Pistol Complete Upper Build Kits Pistol Complete Upper Build Kits
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Products [359]

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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
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MMC Arms
MMC Arms"Thunderreign" AR-15 Featuring Aero Precision Upper Receiver 16" .458 SOCOM 1-14T 4150 CMV Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$604.99 $334.99 Sale
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Davidson Defense
Davidson Defense "Slaw" AR-15 Pistol Upper Receiver 8" 7.62x39 4150 CMV QPQ Nitride 1-10T Heavy Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$504.99 $269.99 Sale
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MMC Arms
MMC Arms "Clack Clack" AR-15 Featuring Aero Precision Upper Receiver 16" .458 SOCOM 4150 CMV 1-14T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$569.99 $319.99 Sale
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MMC
MMC "Bronco" 16" AR-15 5.56 NATO Upper Build Kit
$589.99 $304.99 Sale
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MMC Arms
MMC Arms "Rat-Tat-Tat" AR-15 Pistol Featuring Davidson Defense Upper Receiver 7.5" 5.56 NATO 416R Stainless 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$529.99 $344.99 Sale
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Davidson Defense
Davidson Defense "Rhea" AR-15 Pistol Upper Receiver 10.5" 5.56 NATO 4150 CMV 1-7T Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$524.99 $384.99 Sale
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Davidson Defense
Davidson Defense "Marans" AR-15 Pistol Upper Receiver 4" 9MM 4150 CMV QPQ Nitride 1-10T Barrel 4" M-Lok Handguard (Assembled or Unassembled)
$594.99 $284.99 Sale
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MMC Arms
MMC Arms "Meriden" AR-15 Featuring Davidson Defense Upper Receiver 16" ODIN Works 9MM 416R Stainless 1-10T Barrel Lakota Ops 15" M-Lok Handguard (Pre-Assembled, Ready To Ship)
$694.99 $389.99 Sale
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MMC Arms
MMC Arms "Evansville" LR-308 Featuring A Davidson Defense DPMS Style Upper Receiver 16" .308 WIN 4150 CMV QPQ Nitride 1-10T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$694.99 $364.99 Sale
Out of Stock
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MMC Arms
MMC Arms "Ardere" LR-308 Featuring A Davidson Defense DPMS Style Upper Receiver 20" .308 WIN 4150 CMV QPQ Nitride 1-10T Barrel 16.5" M-Lok Handguard (Assembled or Unassembled)
$689.99 $414.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Substance" AR-15 Pistol Upper Receiver 5.25" 9MM 4150 CMV QPQ Nitride 1-10T Barrel 4" M-Lok Handguard BCG and Charging Handle (Assembled or Unassembled)
$569.99 $279.99 Sale
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MMC Arms
MMC Arms "Xander" AR-15 Pistol Featuring A Mil-Spec Upper Receiver 7.5" Ballistic Advantage 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel Lakota Ops 7" M-Lok Handguard (Assembled or Unassembled)
$569.99 $284.99 Sale
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MMC
MMC "Capitol" 20" AR-15 5.56 NATO Nitride Complete Upper Build W/ Ballistic Advantage
$684.99 $399.99 Sale
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MMC
MMC "Gateway" 9" AR-15 .300 Blackout Pistol Complete Upper W/: Ballistic Advantage and Phase5
$674.99 $389.99 Sale
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Davidson Defense
Davidson Defense "Corncrake" AR-15 Pistol Upper Receiver 8.5" 9MM 4150 CMV QPQ Nitride 1-10T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$574.99 $259.99 Sale
In Stock
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Davidson Defense
Davidson Defense "Golden Eagle" AR-15 Upper Receiver 16" .300 Blackout 4150 CMV QPQ Nitride 1-8T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$569.99 $284.99 Sale
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Davidson Defense
Davidson Defense "Partridge" AR-15 Pistol Upper Receiver 7.5" 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$554.99 $269.99 Sale
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Davidson Defense
Davidson Defense "Crayfish" AR-15 Pistol Upper Receiver 7.5" 5.56 NATO 4150 CMV 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$549.99 $264.99 Sale
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Davidson Defense
Davidson Defense "Guacamole" AR-15 Pistol Upper Receiver 7.5" 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$549.99 $264.99 Sale
In Stock
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Davidson Defense
Davidson Defense "Anteater" AR-15 Pistol Upper Receiver 7.5" 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$564.99 $279.99 Sale
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MMC Arms
MMC Arms "Pershing" LR-308 Featuring Aero Precision M5 Upper 20" .308 Win 4150 CMV QPQ Nitride 1-10T Barrel 15" High Profile M-Lok Handguard (Assembled or Unassembled)
$814.99 $499.99 Sale
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MMC Arms 'Kestrel' 20
MMC Arms 'Kestrel' 20" LR-308 6.5 Creedmoor Nitride Rifle Complete Upper Build Kit
$809.99 $494.99 Sale
In Stock
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MMC
MMC "Yinlong" 12.5" AR-15 5.56 Nitride Complete Upper Build Kit W/ Aero
$594.99 $309.99 Sale
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