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5.56 NATO > AR-15 Upper Build Kit

Top Sellers

MMC Armory Exclusive 'Noble Slender' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit - No Handguard
MMC Armory Exclusive 'Noble Slender' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit - No Handguard
$179.99 $134.99
Aero Precision AR15 Complete Upper, 16
Aero Precision AR15 Complete Upper, 16" 5.56 Mid-Length Barrel w/ Pinned FSB, MOE Mid-Length - Black
$424.99 $299.99
Davidson Defense 'Full House' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
Davidson Defense 'Full House' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$169.99 $129.99
Davidson Defense 'Capture' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
Davidson Defense 'Capture' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$169.99 $129.99

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  • Pistol Length > 5.56 NATO > AR-15 Upper Build Kits
  • Rifle Length > 5.56 NATO > AR-15 Upper Build Kit

Products [93]

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Davidson Defense
Davidson Defense "Scaup" AR-15 Pistol Upper Receiver 7.5" 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$234.99 $179.99 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)
$494.99 $374.99 Sale
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Davidson Defense
Davidson Defense "Fuego" AR-15 Pistol Upper Receiver 7.5" 5.56 NATO 4150 CMV QPQ Nitride 1-7T Barrel 9" M-Lok Handguard (Assembled or Unassembled)
$239.99 $184.99 Sale
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Davidson Defense
Davidson Defense "Fregata" AR-15 Pistol Upper Receiver 10.5" 5.56 NATO 4150 CMV 1-7T Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$209.99 $159.99 Sale
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Davidson Defense
Davidson Defense "Giga Wing" AR-15 Pistol Upper Receiver 10.5" 5.56 NATO 4150 CMV 1-8T Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$204.99 $154.99 Sale
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Davidson Defense
Davidson Defense "Regiment" AR-15 Pistol Upper Receiver 11.5" 5.56 NATO 4150 CMV 1-7T Barrel Carbine Length Drop-In Handguard (Assembled or Unassembled)
$179.99 $134.99 Sale
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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)
$254.99 $189.99 Sale
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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)
$444.99 $334.99 Sale
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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)
$249.99 $189.99 Sale
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MMC Top Shelf
MMC Top Shelf "Ironstone" 16.5" AR-15 5.56 Nitride Upper Build Kit W/ Mercury Precision, Unique AR
$474.99 $409.99 Sale
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MMC Arms Top Shelf
MMC Arms Top Shelf "Hognose" AR-15 Featuring Aero Precision Upper Receiver 18" Faxon Firearms 5.56 NATO 4150 CMV QPQ Nitride 1-8T Barrel 15" Unique AR Handguard (Assembled or Unassembled)
$844.99 $634.99 Sale
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Davidson Defense
Davidson Defense "Huckleberry" AR-15 Upper Receiver 20" 5.56 NATO 4150 CMV QPQ Nitride 1-9T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$289.99 $219.99 Sale
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Davidson Defense
Davidson Defense "Erebos" AR-15 Upper Receiver 14.5" 5.56 NATO 4150 CMV 1-9T Barrel Carbine Length Drop-In Handguard (Assembled or Unassembled)
$204.99 $154.99 Sale
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MMC Customs
MMC Customs "Avagaum" AR-15 Pistol Upper Receiver 8.5" 5.56 NATO 4150 CMV 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$189.99 $144.99 Sale
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Davidson Defense
Davidson Defense "Wiscasset" AR-15 Upper Receiver 16" 5.56 NATO 1-7T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$249.99 $189.99 Sale
In Stock
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Davidson Defense
Davidson Defense "Babaco" AR-15 Pistol Upper Receiver 14.5" 5.56 NATO 4150 CMV 1-7T Barrel Carbine Length Drop-In Handguard (Assembled or Unassembled)
$404.99 $304.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Acerola" AR-15 Upper Receiver 16" 5.56 NATO 1-7T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$259.99 $194.99 Sale
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Davidson Defense
Davidson Defense "Longan" AR-15 Upper Receiver 16" 5.56 NATO 1-7T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$259.99 $194.99 Sale
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Davidson Defense
Davidson Defense "Centralia" AR-15 Upper Receiver 16" 5.56 NATO 4150 CMV 1-7T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$319.99 $239.99 Sale
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MMC Arms Top Shelf
MMC Arms Top Shelf "Fallen" AR-15 Featuring A Davidson Defense Upper Receiver 18" Faxon Firearms 5.56 NATO 4150 CMV QPQ Nitride 1-8T Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$424.99 $319.99 Sale
Out of Stock
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Davidson Defense 'Firehound' 16-inch AR-15 5.56 NATO Parkerized Rifle Upper Build Kit
Davidson Defense 'Firehound' 16-inch AR-15 5.56 NATO Parkerized Rifle Upper Build Kit
$454.99 $344.99 Sale
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Davidson Defense 'Lightshow III - Black' 16.5
Davidson Defense 'Lightshow III - Black' 16.5" AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$244.99 $184.99 Sale
In Stock
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Davidson Defense 'Plunker' 7.5
Davidson Defense 'Plunker' 7.5" AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$239.99 $184.99 Sale
In Stock
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Davidson Defense 'Plinky' 7.5
Davidson Defense 'Plinky' 7.5" AR-15 5.56 NATO Nitride Pistol Full Build Kit
$414.99 $314.99 Sale
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