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  • 4TH OF JULY SALE
    • Aero Precision | Up to 25 Off
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  • AR-15 & LR-308 Upper Builds
    • Top Shelf | AR-15 & LR-308/AR-10 Upper Build Kits
    • All AR-15 & LR-308/AR-10 | Upper Builds by Caliber
    • AR-15 & LR-308/AR-10 | 80% Upper Build Kits
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    • Upper Build Kit Sale
    • Budget Builds $199.99 and Under
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Top Sellers

MMC Top Shelf
MMC Top Shelf "Budworm" 24" AR-15 .223 Wylde Nitride Spiral Fluted Bull Barrel Upper Build Kit /W ELD Alpha Series
$624.99 $309.99
Davidson Defense
Davidson Defense "Choplifter" AR-15 Upper Receiver 16" 5.56 NATO 4150 CMV QPQ Nitride 1-8T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$549.99 $234.99
MMC Arms Top Shelf
MMC Arms Top Shelf "Half Life" AR-15 Featuring Davidson Defense Upper Receiver 16" Rosco Manufacturing 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 15" Unique AR Handguard (Assembled or Unassembled)
$734.99 $419.99
MMC Arms Top Shelf
MMC Arms Top Shelf "Surge" AR-15 Featuring Aero Precision Upper Receiver 16.5" Mercury Precision 5.56 NATO 4150 CMV QPQ Nitride 1-7 Barrel 12" M-Lok Davidson Defense Handguard (Assembled or Unassembled)
$499.99 $184.99
Top Shelf 'Ashsplitter' AR-15 Rifle Upper Build Kit Featuring Davidson Defense Upper .223 Wylde 16
Top Shelf 'Ashsplitter' AR-15 Rifle Upper Build Kit Featuring Davidson Defense Upper .223 Wylde 16" 416R Stainless Steel 1-8T Unique AR 15" Handguard (Assembled or Unassembled)
$749.99 $434.99
MMC 'Fennek' 16.5
MMC 'Fennek' 16.5" AR-15 5.56 Upper Build Kit
$544.99 $229.99

Manufacturer

  1. Home
  2. AR-15 & LR-308 Upper Builds
  3. *Categories*
  4. AR-15 and LR-308/AR10 Upper Build Kits by Caliber
  5. AR-15
  6. 5.56 Nato .223 Wylde Upper Builds
  7. 5.56 Nato .223 Wylde (AR-15) Rifle
  8. 5.56 Nato .223 Wylde (AR-15) Rifle Upper Build Kits

5.56 Nato .223 Wylde (AR-15) Rifle Upper Build Kits

Products [115]

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Davidson Defense
Davidson Defense"King Snake" AR-15 Upper Receiver 16" .223 Wylde Stainless QPQ Nitride 1-9T Spiral Fluted Heavy Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$484.99 $269.99 Sale
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MMC Arms Top Shelf
MMC Arms Top Shelf "Kaiser" AR-15 Featuring War Dog Industries Upper Receiver 18" Faxon Firearms 5.56 NATO 1-8T QPQ Nitride Barrel 15" Davidson Defense M-Lok Handguard (Assembled or Unassembled)
$624.99 $374.99 Sale
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MMC Arms Top Shelf
MMC Arms Top Shelf "Lynx" AR-15 Featuring Davidson Defense Upper Receiver 18" Faxon Firearms 5.56 NATO 4150 CMV QPQ Nitride 1-8T Barrel 17.5" KeyMod ODIN Works Handguard (Assembled or Unassembled)
$624.99 $379.99 Sale
Out of Stock
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MMC Arms Top Shelf
MMC Arms Top Shelf "Half Life" AR-15 Featuring Davidson Defense Upper Receiver 16" Rosco Manufacturing 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 15" Unique AR Handguard (Assembled or Unassembled)
$734.99 $419.99 Sale
In Stock
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Davidson Defense
Davidson Defense "Blade Eagle" AR-15 Upper Receiver 24" 5.56 NATO 416R Stainless 1-9T Target Crowned Bull Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$484.99 $234.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Joust" Side Charging AR-15 Upper Receiver 20" 5.56 NATO 416R Stainless 1-9T Target Crowned Bull Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$524.99 $359.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Themis" AR-15 Upper Receiver 24" 5.56 NATO 416R Stainless 1-9T Target Crowned Bull Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$519.99 $229.99 Sale
Out of Stock
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MMC Top Shelf
MMC Top Shelf "Carnivore" 16" AR-15 5.56 NATO Upper Build Kit W/: Faxon Firearms and Strike Industries
$684.99 $369.99 Sale
In Stock
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Davidson Defense
Davidson Defense "Knight Orc" 16" AR-15 5.56 NATO Nitride Upper Build Kit
$579.99 $264.99 Sale
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Davidson Defense
Davidson Defense "Larimar" AR-15 Upper Receiver 16.5" 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$569.99 $254.99 Sale
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Davidson Defense
Davidson Defense "Vitric" AR-15 Upper Receiver 16.5" 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$514.99 $274.99 Sale
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Davidson Defense
Davidson Defense "Websterite" 16.5" AR-15 5.56 Nitride Upper Build Kit
$559.99 $244.99 Sale
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Davidson Defense
Davidson Defense "Charoite" AR-15 Upper Receiver 16.5" 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$569.99 $254.99 Sale
In Stock
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MMC Arms Top Shelf
MMC Arms Top Shelf "Granulite" AR-15 Featuring Davidson Defense Upper Receiver 16.5" Mercury Precision 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 15" Unique AR Handguard(Assembled or Unassembled)
$639.99 $384.99 Sale
In Stock
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MMC Arms Top Shelf
MMC Arms Top Shelf "Ironstone" AR-15 Featuring Davidson Defense Upper Receiver 16.5" Mercury Precision 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 15" Unique AR Handguard(Assembled or Unassembled)
$709.99 $394.99 Sale
In Stock
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MMC Arms Top Shelf
MMC Arms Top Shelf "Olivine" AR-15 Featuring Davidson Defense Upper Receiver 16.5" Mercury Precision 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 15" Unique AR Handguard (Assembled or Unassembled)
$719.99 $404.99 Sale
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