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.300 Blackout > AR-15 Complete Upper Build Kits
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Shop by Caliber > AR-15 & LR-308/AR-10 Complete Upper Build Kits
.300 Blackout > AR-15 Complete Upper Build Kits
Pistol Length > .300 Blackout > AR-15 Complete Upper Build Kits
Rifle Length > .300 Blackout > AR-15 Complete Upper Build Kits
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MMC "Gateway" 9" AR-15 .300 Blackout Pistol Complete Upper W/: Ballistic Advantage and Phase5
$674.99
$389.99
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Davidson Defense "Golden Eagle" AR-15 Upper Receiver 16" .300 Blackout 4150 CMV QPQ Nitride 1-8T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$569.99
$284.99
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Davidson Defense 'MX' 10.5" AR-15 .300 Blackout Nitride Pistol Complete Upper Build Kit
$689.99
$374.99
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Davidson Defense 'LX' 8.2" AR-15 .300 Blackout Nitride Pistol Complete Upper Build Kit
$759.99
$449.99
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MMC Top Shelf 'Noctuidae' 7.5" AR-15 .300BLK Nitride Pistol Complete Upper Build
$644.99
$359.99
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MMC Arms 'Courtier' 7.5" AR-15 .300BLK Nitride Pistol Complete Upper Build Kit
$699.99
$384.99
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Davidson Defense 'Wayman' 8.5" AR-15 .300BLK Nitride Pistol Complete Upper Build
$594.99
$279.99
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Davidson Defense 'Ember' 8.5" AR-15 .300BLK Nitride Pistol Complete Upper Build
$594.99
$279.99
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Davidson Defense 'Jarom' 8.5" AR-15 .300BLK Nitride Pistol Complete Upper Build
$599.99
$274.99
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