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5.56 NATO > AR-15 Complete Upper Build Kits

Top Sellers

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
MMC "Capitol" 20" AR-15 5.56 NATO Nitride Complete Upper Build W/ Ballistic Advantage
$684.99 $399.99
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 'The Vampire V2' 16
Davidson Defense 'The Vampire V2' 16" AR-15 5.56 NATO Nitride Rifle Complete Upper Build
$564.99 $279.99

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  1. Home
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  4. Shop by Caliber > AR-15 & LR-308/AR-10 Complete Upper Build Kits
  5. 5.56 NATO > AR-15 Complete Upper Build Kits
  • Pistol Length > 5.56 NATO > AR-15 Complete Upper Build Kits
  • Rifle Length > 5.56 NATO > AR-15 Complete Upper Build Kits

Products [123]

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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 "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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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
In Stock
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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
In Stock
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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 "Kornet" 7.5" 5.56 Nitride Pistol Complete Upper Build Kit
$574.99 $289.99 Sale
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MMC 'Manchester' 16.5
MMC 'Manchester' 16.5" AR-15 5.56 Nitride Complete Upper Build Kit
$579.99 $294.99 Sale
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MMC 'Constellation' 16
MMC 'Constellation' 16" AR-15 5.56 Nitride Complete Upper Build Kit W/ Faxon
$674.99 $389.99 Sale
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MMC 'Consus' 8
MMC 'Consus' 8" AR-15 5.56 Pistol Nitride Complete Upper Build Kit W/ Ballistic Advantage
$639.99 $354.99 Sale
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MMC 'Cheetah' 8
MMC 'Cheetah' 8" AR-15 5.56 Pistol Nitride Complete Upper Build Kit W/ Ballistic Advantage
$584.99 $299.99 Sale
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MMC 'Aether' 16
MMC 'Aether' 16" AR-15 5.56 Stainless Complete Upper Build Kit
$584.99 $299.99 Sale
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MMC 'Imperial' 16
MMC 'Imperial' 16" AR-15 5.56 Stainless Complete Upper Build Kit W/ RISE
$669.99 $384.99 Sale
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Davidson Defense 'Grosbeak' 16
Davidson Defense 'Grosbeak' 16" AR-15 5.56 Stainless Complete Upper Build Kit
$604.99 $319.99 Sale
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Davidson Defense 'Cavalier' 16
Davidson Defense 'Cavalier' 16" AR-15 5.56 Nitride Complete Upper Build Kit
$584.99 $299.99 Sale
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Davidson Defense 'Kruithoorn' 16
Davidson Defense 'Kruithoorn' 16" AR-15 5.56 Nitride Rifle Complete Upper Build Kit
$654.99 $369.99 Sale
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Davidson Defense 'Selex' 16
Davidson Defense 'Selex' 16" AR-15 5.56 Nitride Rifle Complete Upper Build Kit
$594.99 $309.99 Sale
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MMC 'Nexter' 16
MMC 'Nexter' 16" AR-15 5.56 Nitride Rifle Complete Upper Build Kit
$594.99 $309.99 Sale
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MMC 'Anabelle' 16
MMC 'Anabelle' 16" AR-15 5.56 Nitride Complete Upper Build Kit W/ Faxon
$709.99 $424.99 Sale
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Davidson Defense 'Talos' 10.5
Davidson Defense 'Talos' 10.5" AR-15 5.56 Nitride Pistol Complete Upper Build Kit
$679.99 $394.99 Sale
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MMC 'Scenar' 10.5
MMC 'Scenar' 10.5" AR-15 5.56 Nitride Pistol Complete Upper Build Kit
$679.99 $394.99 Sale
In Stock
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Davidson Defense 'Vali' 7.5
Davidson Defense 'Vali' 7.5" AR-15 5.56 NATO Nitride Pistol Complete Upper Build Kit
$554.99 $269.99 Sale
In Stock
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MMC Top Shelf 'Crozier' 18
MMC Top Shelf 'Crozier' 18" AR-15 5.56 NATO Nitride Rifle Complete Upper Build Kit W/ Faxon, Aero, Odin Works
$929.99 $614.99 Sale
In Stock
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