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

Top Sellers

Davidson Defense 'Ultralite' 10.5-inch AR-15 .223 Nitride Pistol Upper Build Kit
Davidson Defense 'Ultralite' 10.5-inch AR-15 .223 Nitride Pistol Upper Build Kit
$439.99 $174.99
Davidson Defense 'Voodoo Child' 18
Davidson Defense 'Voodoo Child' 18" AR-15 12.7x42 (.50 BW) Manganese Phosphate Rifle Upper Build Kit
$549.99 $284.99
Davidson Defense 'Hypervelocity' 20
Davidson Defense 'Hypervelocity' 20" LR-308 6.5 Creedmoor Nitride Rifle Upper Build Kit
$514.99 $249.99
Davidson Defense 'Lean' 16-inch AR-15 .223 Nitride Rifle Upper Build Kit
Davidson Defense 'Lean' 16-inch AR-15 .223 Nitride Rifle Upper Build Kit
$484.99 $219.99
Davidson Defense 'Vervain' 4.5
Davidson Defense 'Vervain' 4.5" AR-15 9mm Nitride Pistol Upper Build Kit
$414.99 $149.99
MMC 'Seastone' 7.5
MMC 'Seastone' 7.5" AR-15 7.62x39 Pistol Nitride Upper Build Kit
$444.99 $179.99
Davidson Defense 'A-Blast' 7
Davidson Defense 'A-Blast' 7" AR-15 9MM Pistol Nitride Upper Build Kit
$489.99 $224.99
Davidson Defense 'Dufflepuds' 16-inch AR-15 .300BLK Nitride Rifle Upper Build Kit
Davidson Defense 'Dufflepuds' 16-inch AR-15 .300BLK Nitride Rifle Upper Build Kit
$519.99 $254.99
Davidson Defense 'Duke' 18-inch AR-15 .223 Nitride Rifle Upper Build Kit
Davidson Defense 'Duke' 18-inch AR-15 .223 Nitride Rifle Upper Build Kit
$464.99 $199.99
Davidson Defense 'El Toro' 8.5-inch AR-15 10mm Nitride Pistol Upper Build Kit
Davidson Defense 'El Toro' 8.5-inch AR-15 10mm Nitride Pistol Upper Build Kit
$499.99 $234.99
Davidson Defense 'Emperite' 7.5
Davidson Defense 'Emperite' 7.5" AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$474.99 $209.99
Davidson Defense 'Gaston' 16-inch AR-15 .450 Bushmaster Nitride Rifle Upper Build Kit
Davidson Defense 'Gaston' 16-inch AR-15 .450 Bushmaster Nitride Rifle Upper Build Kit
$489.99 $224.99
Davidson Defense 'Lightshow II - Purple' 16-inch AR-15 5.56 NATO Manganese Phosphate Rifle Upper Build Kit
Davidson Defense 'Lightshow II - Purple' 16-inch AR-15 5.56 NATO Manganese Phosphate Rifle Upper Build Kit
$454.99 $189.99
Davidson Defense 'Phatte Cat' 16-inch AR-15 5.56 NATO Manganese Phosphate Rifle Upper Build Kit
Davidson Defense 'Phatte Cat' 16-inch AR-15 5.56 NATO Manganese Phosphate Rifle Upper Build Kit
$469.99 $204.99

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  4. Shop by Caliber > AR-15 & LR-308/AR-10 Upper Build Kits
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  • 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 [412]

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MMC Arms
MMC Arms"Halen" LR-308 Featuring Aero Precision M5 Upper 18" Ultra-Match 4150 CMV .308 WIN 1-10T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$569.99 $329.99 Sale
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Davidson Defense
Davidson Defense"Manta Ray" AR-15 Upper Receiver 16" 5.56 NATO 4150 CMV 1-8T Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$424.99 $274.99 Sale
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MMC Customs
MMC Customs"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
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MMC Arms Elite Series
MMC Arms Elite Series "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
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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
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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
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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
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Davidson Defense
Davidson Defense "Pygora" AR-15 Upper Receiver 16" .300 Blackout 4150 CMV H-BAR 1-8T Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$469.99 $274.99 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
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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
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MMC Arms
MMC Arms "Loon" LR-308 Featuring Aero Precision M5 Upper 22" 6.5 Creedmoor 4150 CMV QPQ Nitride 1-8T Barrel 16.5" M-Lok Handguard (Assembled or Unassembled)
$644.99 $319.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Forsaken" AR-15 Upper Receiver 18" .350 Legend 4150 CMV 1-16T Heavy Barrel 13.5" M-Lok Handguard (Assembled or Unassembled)
$484.99 $289.99 Sale
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Ace High Arms
Ace High Arms "Littleknot" AR-15 Upper Receiver 16" 5.56 NATO 4150 CMV 1-8T Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$474.99 $284.99 Sale
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Davidson Defense
Davidson Defense "Coble" AR-15 Upper Receiver 20" .350 Legend 4150 CMV 1-16T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$494.99 $259.99 Sale
Out of Stock
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MMC Arms
MMC Arms "Ange" LR-308 Featuring Aero Precision M5 Upper 10.5" .308 WIN 4150 CMV QPQ Nitride Heavy Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$529.99 $289.99 Sale
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Davidson Defense
Davidson Defense "Sounder" AR-15 Pistol Upper Receiver 8" 9MM 4150 CMV QPQ Nitride 1-10T KAK Industries Barrel 7" KeyMod Handguard (Assembled or Unassembled)
$454.99 $224.99 Sale
Out of Stock
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MMC Arms
MMC Arms "Ladon" LR-308 Featuring Aero Precision M5 Upper 18" 6.5 Creedmoor 416R Stainless 1-8T Straight Fluted Heavy Barrel 16" M-Lok Handguard (Assembled or Unassembled)
$569.99 $334.99 Sale
Out of Stock
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Davidson Defense 'Anthea' 7.5
Davidson Defense 'Anthea' 7.5" AR-15 .300 Blackout Manganese Phosphate Pistol Upper Build Kit
$559.99 $244.99 Sale
Out of Stock
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MMC Arms
MMC Arms "Bunting" LR-308 Featuring Aero Precision M5 Upper 18" 6.5 Creedmoor 416R Stainless 1-8T Straight Fluted Heavy Barrel 16" M-Lok Handguard (Assembled or Unassembled)
$569.99 $329.99 Sale
Out of Stock
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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)
$454.99 $239.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Crake" AR-15 Pistol Upper Receiver 4.5" .45 ACP 4150 CMV QPQ Nitride 1-16T Barrel 4" M-Lok Handguard (Assembled or Unassembled)
$454.99 $214.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Brant" AR-15 Pistol Upper Receiver 8" .45 ACP 4150 CMV QPQ Nitride Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$489.99 $239.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Antpitta" AR-15 Pistol Upper Receiver 4.5" .45 ACP 4150 CMV 1-16T Barrel 4" M-Lok Handguard (Assembled or Unassembled)
$464.99 $199.99 Sale
Out of Stock
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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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1 2 3 4 5 6 7 ...18 Next Page View All
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