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  • 4TH OF JULY SALE
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    • 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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Top Sellers

Davidson Defense 'Kabocha' 4
Davidson Defense 'Kabocha' 4" AR-15 9MM NIT Upper Build Kit
$479.99 $159.99
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
MMC
MMC "Jet Star" 8" AR-15 9mm Nitride Pistol Upper Build W/: KAK Industry
$489.99 $174.99
MMC Arms Top Shelf
MMC Arms Top Shelf "Shaula" LR-308 Featuring A DPMS Style Upper Receiver 16" Ballistic Advantage .308 WIN 4150 CMV QPQ Nitride 1-10T Barrel Guntec Low Profile 15" M-Lok Handguard (Assembled or Unassembled)
$709.99 $394.99
Davidson Defense
Davidson Defense "Pyrina" AR-15 Pistol Upper Receiver 7.5" .300 Blackout 4150 CMV QPQ Nitride 1-8T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$604.99 $199.99
MMC Top Shelf
MMC Top Shelf "Dux" 8.5" AR-15 9MM Nitride Upper Build Kit W/ Faxon
$569.99 $254.99
MMC Top Shelf
MMC Top Shelf "Yinlong" 12.5" AR-15 5.56 Nitride Upper Build Kit W/ Aero
$584.99 $269.99
Davidson Defense
Davidson Defense "Lykoi" AR-15 Pistol Upper Receiver 4" 9MM 4150 CMV QPQ Nitride 1-10T KAK Industries Barrel 4" M-Lok Handguard (Assembled or Unassembled)
$459.99 $184.99
Davidson Defense 'Twardy' 20
Davidson Defense 'Twardy' 20" LR-308 .308 Win Nitride Rifle Upper Build Kit
$649.99 $334.99
Davidson Defense
Davidson Defense "Keen" AR-15 Pistol Upper Receiver 8.5" 9MM 4150 CMV QPQ Nitride Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$504.99 $189.99
Davidson Defense 'Turbo Star' 10.5
Davidson Defense 'Turbo Star' 10.5" AR-15 7.62x39 Nitride Pistol Upper Build Kit
$534.99 $219.99
MMC Arms 'Sea King' AR-15 Rifle Upper Build Kit Featuring Davidson Defense Upper .350 Legend 16
MMC Arms 'Sea King' AR-15 Rifle Upper Build Kit Featuring Davidson Defense Upper .350 Legend 16" 4150 CMV QPQ Nitride 1-16T 15" M-Lok Handguard (Assembled or Unassembled)
$634.99 $319.99
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
MMC 'Seastone' 7.5
MMC 'Seastone' 7.5" AR-15 7.62x39 Pistol Nitride Upper Build Kit
$519.99 $204.99
Davidson Defense 'Morah' 4
Davidson Defense 'Morah' 4" AR-15 9MM NIT Upper Build Kit
$494.99 $179.99

Manufacturer

  1. Home
  2. AR-15 & LR-308 Upper Builds
    3. Upper Build Kits
  3. AR-15 & LR-308/AR-10 AR-15 & LR-308/AR-10 Upper Build Kits
  4. Shop by Caliber

Shop by Caliber | AR-15 & LR-308/AR-10 Upper Build Kits

  • 12.7x42 | AR-15 Upper Build Kits
  • 5.56 NATO | AR-15 Upper Build Kit
  • .223 Wylde | AR-15 Upper Build Kits
  • .300 Blackout | AR-15 Upper Build Kits
  • 9mm | AR-15 Upper Build Kits
  • 7.62x39 | AR-15 Upper Build Kits
  • .458 SOCOM | AR-15 Upper Build Kits
  • .350 Legend | AR-15 Upper Build Kits
  • .450 Bushmaster | AR-15 Upper Build Kits
  • 6.5 Grendel | AR-15 Upper Build Kits
  • 6mm ARC | AR-15 Upper Build Kits
  • .308 Winchester | LR-308/AR-10 Upper Build Kits
  • 6.5 Creedmoor | LR-308/AR-10 Upper Build Kits

Products [405]

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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
In Stock
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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
In Stock
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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"Cataclysm" AR-15 Featuring Aero Precision Upper Receiver 16" .458 SOCOM 1-14T 4150 CMV Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$479.99 $259.99 Sale
In 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 Top Shelf
MMC Arms Top Shelf"Thumper" AR-15 Pistol Featuring Aero Precision Upper Receiver 10.5" .450 Bushmaster 1-24T 4150 CMV Heavy Barrel Premium 10" KeyMod Handguard (Assembled or Unassembled)
$504.99 $284.99 Sale
Out of 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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MMC Arms
MMC Arms"Mini Sledge" AR-15 Featuring Aero Precision Upper Receiver 10.5" .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 10" KeyMod Handguard (Assembled or Unassembled)
$549.99 $284.99 Sale
Out of Stock
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MMC Arms
MMC Arms"Elbrus" AR-15 Featuring Aero Precision Upper Receiver 16" .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$489.99 $314.99 Sale
In Stock
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Davidson Defense
Davidson Defense "Siamese Fireback" AR-15 Pistol Upper Receiver 5.25" 9MM QPQ Nitride 1-10T KAK Industries Barrel 4" M-Lok Handguard (Assembled or Unassembled)
$409.99 $204.99 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 "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 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
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
$584.99 $269.99 Sale
In Stock
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1 2 3 4 5 6 7 ...26 Next Page View All
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