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Rifle Upper Build Kits

Top Sellers

Omega Mfg. Rear Beavertail grip, Rubberized Coating
Omega Mfg. Rear Beavertail grip, Rubberized Coating
$4.99
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
Davidson Defense Falas (Suppressor Ready) 16.5-inch AR-15 5.56 NATO Rifle Upper Build Kit
Davidson Defense Falas (Suppressor Ready) 16.5-inch AR-15 5.56 NATO Rifle Upper Build Kit
$214.99 $159.99
Davidson Defense '9mm Lightshow - Black' 16
Davidson Defense '9mm Lightshow - Black' 16" AR-15 9mm Nitride Rifle Upper Build Kit
$229.99 $174.99
Davidson Defense Illuin 16-inch AR-15 .300 BLK Rifle Upper Build Kit
Davidson Defense Illuin 16-inch AR-15 .300 BLK Rifle Upper Build Kit
$194.99 $144.99
Davidson Defense Ormal 16-inch AR-15 .300 BLK Rifle Upper Build Kit
Davidson Defense Ormal 16-inch AR-15 .300 BLK Rifle Upper Build Kit
$204.99 $154.99
Davidson Defense Shout of Power 16-inch AR-15 5.56 NATO Rifle Upper Build Kit
Davidson Defense Shout of Power 16-inch AR-15 5.56 NATO Rifle Upper Build Kit
$194.99 $144.99
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
MMC Customs
MMC Customs "Chaffee" LR-308 Featuring Aero Precision M5 Upper 20" .308 Win 4150 CMV 1-10T Barrel 17" High Profile M-Lok Handguard (Assembled or Unassembled)
$419.99 $314.99
Davidson Defense 'Accismus' 20
Davidson Defense 'Accismus' 20" LR-308 .308 Win Stainless Rifle Upper Build Kit
$389.99 $294.99
Davidson Defense 'Jet Medallion' 16-inch AR-15 .223 Wylde Parkerized Rifle Upper Build Kit
Davidson Defense 'Jet Medallion' 16-inch AR-15 .223 Wylde Parkerized Rifle Upper Build Kit
$189.99 $144.99
Davidson Defense Orome 18-inch AR-15 6MM ARC Rifle Complete Upper Build
Davidson Defense Orome 18-inch AR-15 6MM ARC Rifle Complete Upper Build
$344.99 $259.99
Davidson Defense Rainforest Reaper 16-inch AR-15 .45 ACP Rifle Upper Build Kit
Davidson Defense Rainforest Reaper 16-inch AR-15 .45 ACP Rifle Upper Build Kit
$184.99 $139.99
Davidson Defense BioShock 16-inch AR-15 7.62x39mm Rifle Upper Build Kit
Davidson Defense BioShock 16-inch AR-15 7.62x39mm Rifle Upper Build Kit
$239.99 $179.99
Davidson Defense 'Centurion Reach' 24-inch LR-308 6.5 Creedmoor Nitride Rifle Upper Build Kit
Davidson Defense 'Centurion Reach' 24-inch LR-308 6.5 Creedmoor Nitride Rifle Upper Build Kit
$449.99 $339.99
Davidson Defense Glassbreaker 18-inch AR-15 .450 Bushmaster Rifle Upper Build Kit
Davidson Defense Glassbreaker 18-inch AR-15 .450 Bushmaster Rifle Upper Build Kit
$224.99 $169.99

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  • .223 Rem > Rifle Length > AR-15 Upper Build Kits
  • .45 ACP > Rifle Length > AR-15 Upper Build Kits
  • 10mm > Rifle Length > AR-15 Upper Build Kits

Products [224]

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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)
$334.99 $249.99 Sale
Out of Stock
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Omega Mfg. Rear Beavertail grip, Rubberized Coating
Omega Mfg. Rear Beavertail grip, Rubberized Coating
$4.99
In 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)
$394.99 $299.99 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)
$284.99 $214.99 Sale
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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)
$469.99 $354.99 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)
$349.99 $264.99 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)
$524.99 $394.99 Sale
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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)
$354.99 $264.99 Sale
Out of Stock
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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)
$324.99 $244.99 Sale
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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)
$469.99 $349.99 Sale
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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)
$469.99 $354.99 Sale
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MMC Arms Top Shelf
MMC Arms Top Shelf "Cobelodus" AR-15 Featuring Davidson Defense Upper Receiver 16" XX-Treme Barrel Company .350 Legend 4150 CMV 1-16T Barrel 12" Smooth Tube Unique AR Handguard (Assembled or Unassembled)
$434.99 $329.99 Sale
In 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)
$494.99 $374.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Moroder" AR-15 Upper Receiver 20" 6.5 Grendel 416R Stainless 1-8T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$299.99 $224.99 Sale
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Davidson Defense
Davidson Defense "Untouchable" AR-15 Upper Receiver 18" .350 Legend 4150 CMV 1-16T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$339.99 $254.99 Sale
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Davidson Defense 'Mercs' 16
Davidson Defense 'Mercs' 16" AR-15 .300 Blackout Manganese Phosphate Upper Build Kit
$234.99 $179.99 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
Out of Stock
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MMC Arms
MMC Arms "Sesto" LR-308 Featuring A Davidson Defense DPMS Style Upper Receiver 22" 6.5 Creedmoor 4150 CMV QPQ Nitride Straight Fluted Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$384.99 $289.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Buzz!" AR-15 Upper Receiver 18" .450 Bushmaster 4150 CMV 1-24T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$299.99 $229.99 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)
$444.99 $334.99 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)
$249.99 $189.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Iolite" AR-15 Upper Receiver 16" .350 Legend 4150 CMV 1-16T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$269.99 $199.99 Sale
In Stock
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MMC Arms
MMC Arms "Xonotic" LR-308 Featuring Aero Precision M5 Upper 24" .308 WIN 416R Stainless 1-10T Straight Fluted Bull Barrel 19" M-Lok Handguard (Assembled or Unassembled)
$459.99 $344.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Andesite" AR-15 Upper Receiver 16" .450 Bushmaster 4150 CMV 1-16T Heavy Barrel 13" M-Lok Handguard (Assembled or Unassembled)
$304.99 $229.99 Sale
Out of Stock
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