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.300 Blackout > AR-15 Upper Build Kits

Manufacturer

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  4. Shop by Caliber > AR-15 & LR-308/AR-10 Upper Build Kits
  5. .300 Blackout > AR-15 Upper Build Kits
  • Pistol Length > .300 Blackout > AR-15 Upper Build Kit
  • Rifle Length > .300 Blackout > AR-15 Upper Build Kit

Products [16]

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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
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Davidson Defense 'Ivy' 7.5
Davidson Defense 'Ivy' 7.5" AR-15 .300 Blackout Manganese Phosphate Pistol Upper Build Kit
$569.99 $254.99 Sale
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Davidson Defense 'Mercs' 16
Davidson Defense 'Mercs' 16" AR-15 .300 Blackout Manganese Phosphate Upper Build Kit
$539.99 $224.99 Sale
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Davidson Defense
Davidson Defense "Dredd" AR-15 Upper Receiver 16" .300 Blackout 4150 CMV 1-8T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$509.99 $284.99 Sale
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Davidson Defense
Davidson Defense "Boracite" Side Charging AR-15 Pistol Upper Receiver 8.5" .300 Blackout 4150 CMV 1-8T Barrel 9" M-Lok Handguard (Assembled or Unassembled)
$509.99 $364.99 Sale
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MMC Arms Elite Series
MMC Arms Elite Series "Noctuidae" 7.5" AR-15 .300 Blackout Pistol Upper Build
$664.99 $289.99 Sale
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MMC Top Shelf
MMC Top Shelf "Gateway" 9" AR-15 .300 Blackout Pistol Upper Build W/: Ballistic Advantage and Phase5
$614.99 $329.99 Sale
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Davidson Defense 'Orca' 10.5
Davidson Defense 'Orca' 10.5" AR-15 .300 BLK NIT Left Handed Upper Build Kit
$574.99 $259.99 Sale
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Davidson Defense 'LX' 8.2
Davidson Defense 'LX' 8.2" AR-15 .300 Blackout Nitride Pistol Upper Build Kit
$649.99 $334.99 Sale
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MMC Arms 'Courtier' 7.5
MMC Arms 'Courtier' 7.5" AR-15 .300BLK Nitride Pistol Upper Build Kit
$579.99 $264.99 Sale
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Davidson Defense 'Theros' 7.5
Davidson Defense 'Theros' 7.5" AR-15 .300BLK Nitride Pistol Upper Build Kit
$579.99 $264.99 Sale
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Davidson Defense 'Hobber' 7.5
Davidson Defense 'Hobber' 7.5" AR-15 .300BLK Nitride Pistol Upper Build Kit
$569.99 $249.99 Sale
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Davidson Defense 'Wayman' 8.5
Davidson Defense 'Wayman' 8.5" AR-15 .300BLK Nitride Pistol Upper Build Kit
$529.99 $214.99 Sale
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Davidson Defense 'Ember' 8.5
Davidson Defense 'Ember' 8.5" AR-15 .300BLK Nitride Pistol Upper Build Kit
$529.99 $214.99 Sale
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Davidson Defense 'Jarom' 8.5
Davidson Defense 'Jarom' 8.5" AR-15 .300BLK Nitride Pistol Upper Build Kit
$524.99 $209.99 Sale
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Davidson Defense 'Tenney' 9
Davidson Defense 'Tenney' 9" AR-15 .300BLK Nitride Pistol Upper Build Kit
$614.99 $299.99 Sale
In Stock
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