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Upper Build Kits

Top Sellers

Davidson Defense
Davidson Defense "Megara" 4" AR-15 9MM Nitride Pistol Upper Build
$184.99 $139.99
Davidson Defense 'Prydwen' 16
Davidson Defense 'Prydwen' 16" AR-15 .458 SOCOM Nitride Rifle Upper Build Kit
$279.99 $189.99
Davidson Defense 'Blue Steel' 4.5
Davidson Defense 'Blue Steel' 4.5" AR-15 9mm Nitride Pistol Upper Build Kit
$179.99 $134.99
Davidson Defense 'Tsurugi 6MM ARC' 18-inch AR-15 6mm ARC Nitride Rifle Upper Build Kit
Davidson Defense 'Tsurugi 6MM ARC' 18-inch AR-15 6mm ARC Nitride Rifle Upper Build Kit
$274.99 $184.99
Davidson Defense 'Vervain' 4.5
Davidson Defense 'Vervain' 4.5" AR-15 9mm Nitride Pistol Upper Build Kit
$184.99 $139.99
Davidson Defense 'Buzzworthy' 20
Davidson Defense 'Buzzworthy' 20" AR-15 5.56 NATO Phosphate Rifle Upper Build Kit
$259.99 $174.99
Davidson Defense 'Hollow Words' 16
Davidson Defense 'Hollow Words' 16" AR-15 .223 Wylde Nitride Rifle Upper Build Kit
$294.99 $189.99
Davidson Defense 'Shadow Stalker' 8.5
Davidson Defense 'Shadow Stalker' 8.5" AR-15 .300BLK Nitride Pistol Upper Build Kit
$234.99 $179.99
MMC 'Conway' 16.5
MMC 'Conway' 16.5" AR-15 9MM NIT Upper Build Kit
$274.99 $209.99
Davidson Defense 'Basic Stan' 10.5-inch AR-15 .223 Wylde Nitride Pistol Upper Build Kit
Davidson Defense 'Basic Stan' 10.5-inch AR-15 .223 Wylde Nitride Pistol Upper Build Kit
$249.99 $169.99
Davidson Defense 'Frogger V223' 16-inch AR-15 .223 Wylde Phosphate Rifle Upper Build Kit
Davidson Defense 'Frogger V223' 16-inch AR-15 .223 Wylde Phosphate Rifle Upper Build Kit
$194.99 $149.99
Davidson Defense 'Hammer Buster' 10.5
Davidson Defense 'Hammer Buster' 10.5" AR-15 .223 Nitride Pistol Upper Build Kit
$289.99 $199.99
Davidson Defense 'New Manchester' 16
Davidson Defense 'New Manchester' 16" AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$259.99 $199.99
Davidson Defense 'The Aristocrat' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
Davidson Defense 'The Aristocrat' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$269.99 $184.99
MMC 'Fennek Evolved' 16
MMC 'Fennek Evolved' 16" AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$274.99 $209.99

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Products [352]

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Davidson Defense 'Mayflower' 16
Davidson Defense 'Mayflower' 16" AR-15 .300 Blackout Manganese Phosphate Upper Build Kit
$524.99 $209.99 Sale
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Davidson Defense 'Nerine' 16
Davidson Defense 'Nerine' 16" AR-15 .300 Blackout Manganese Phosphate Upper Build Kit
$524.99 $209.99 Sale
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Davidson Defense
Davidson Defense "Nolana" AR-15 Upper Receiver 16" .300 Blackout 4150 CMV 1-8T Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$544.99 $279.99 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)
$514.99 $254.99 Sale
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MMC Arms Top Shelf
MMC Arms Top Shelf "Betony" LR-308 Featuring Aero Precision Upper Receiver 18.75" Ballistic Advantage .308 WIN 4150 CMV QPQ Nitride 1-10T Barrel 15" KeyMod AIM Sports Handguard (Assembled or Unassembled)
$709.99 $389.99 Sale
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Davidson Defense
Davidson Defense "Serama" AR-15 Pistol Upper Receiver 4" 9MM 4150 CMV QPQ Nitride 1-10T Barrel 4" M-Lok Handguard (Assembled or Unassembled)
$494.99 $184.99 Sale
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Davidson Defense
Davidson Defense "Aitne" AR-15 Upper Receiver 20" 6.5 Grendel 416R Stainless 1-8T Straight Fluted Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$574.99 $269.99 Sale
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Davidson Defense
Davidson Defense "Biddleford" AR-15 Upper Receiver 18" 6.5 Grendel 4150 CMV 1-8T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$584.99 $279.99 Sale
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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)
$624.99 $319.99 Sale
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Davidson Defense
Davidson Defense "Boru" AR-15 Upper Receiver 16" 6.5 Grendel 416R Stainless 1-8T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$584.99 $279.99 Sale
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Davidson Defense
Davidson Defense "Arx" AR-15 Upper Receiver 16" 6.5 Grendel 416R Stainless 1-8T Barrel 12.5" Quad Rail Handguard (Assembled or Unassembled)
$579.99 $264.99 Sale
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MMC Arms
MMC Arms "Muncie" LR-308 Featuring A Davidson Defense DPMS Style Upper Receiver 16" .308 WIN 4150 CMV QPQ Nitride 1-10T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$604.99 $314.99 Sale
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MMC Arms
MMC Arms "Maziacs" LR-308 Featuring A Davidson Defense DPMS Style Upper Receiver 20" .308 WIN 4150 CMV QPQ Nitride 1-10T Barrel 19" M-Lok Handguard (Assembled or Unassembled)
$599.99 $324.99 Sale
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MMC Arms
MMC Arms "Along The Way" LR-308 Featuring Aero Precision M5 Upper 20" 6.5 Creedmoor 4150 CMV QPQ Nitride 1-10T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$649.99 $359.99 Sale
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MMC Arms
MMC Arms "Epiphany" LR-308 Pistol Featuring A Davidson Defense DPMS Style Upper Receiver 10.5" .308 WIN 4150 CMV QPQ Nitride 1-10T Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$609.99 $334.99 Sale
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Davidson Defense
Davidson Defense "Beetlejuice" AR-15 Pistol Upper Receiver 10.5" 7.62x39 4150 CMV 1-10T Heavy Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$494.99 $229.99 Sale
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Davidson Defense
Davidson Defense "Sonny" 4" AR-15 9MM Nitride Upper Build Kit
$504.99 $199.99 Sale
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Davidson Defense
Davidson Defense "Understatement" 4" AR-15 9MM Nitride Upper Build Kit
$519.99 $199.99 Sale
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Davidson Defense
Davidson Defense "Rana" AR-15 Pistol Upper Receiver 4" 9MM 4150 CMV QPQ Nitride 1-10T Barrel 4" M-Lok Handguard (Assembled or Unassembled)
$534.99 $199.99 Sale
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Davidson Defense
Davidson Defense "Arcy" AR-15 Pistol Upper Receiver 10.5" .350 Legend 4150 CMV 1-16T Heavy Barrel 12" M-Lok Handguard (Assembled or Unassembled)
$629.99 $284.99 Sale
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Davidson Defense
Davidson Defense "Doki" AR-15 Pistol Upper Receiver 7.5" .223 Wylde 4150 CMV 1-7T Barrel 7" M-Lok Handguard (Assembled or Unassembled)
$594.99 $274.99 Sale
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Davidson Defense
Davidson Defense "Ladrillera" 6" AR-15 9MM Pistol Upper Build Kit
$224.99 $169.99 Sale
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Davidson Defense
Davidson Defense "Shutzen" 6" AR-15 9MM Pistol Upper Build Kit
$209.99 $159.99 Sale
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Davidson Defense
Davidson Defense "Desguace" 6" AR-15 9MM Pistol Upper Build Kit
$214.99 $164.99 Sale
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