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AR-15 & AR-10 Build Kits


Top Sellers

*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - Black (upper only)
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - Black (upper only)
$575.00
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - FDE (upper only)
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - FDE (upper only)
$575.00
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - Gray (upper only)
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - Gray (upper only)
$575.00
Matador Arms Montgo-9 Complete 9mm Upper
Matador Arms Montgo-9 Complete 9mm Upper
$594.99 $499.99
MMC
MMC "Ammosaurus" 16.5" AR-15 5.56 Nitride Full Build Kit W/ Aero
$649.99 $364.99
Davidson Defense 'Bayou Buster' 20
Davidson Defense 'Bayou Buster' 20" LR-308 .308 Win Stainless Rifle Full Build Kit
$789.99 $474.99
Davidson Defense 'Straight Shooter' 17.1
Davidson Defense 'Straight Shooter' 17.1" AR-15 .223 Stainless Rifle Full Build Kit
$644.99 $359.99
Davidson Defense 'Fire Starter' 18
Davidson Defense 'Fire Starter' 18" LR-308 .308 Win Nitride Rifle Full Build Kit
$714.99 $499.99
Davidson Defense 'Mantle' 7.5
Davidson Defense 'Mantle' 7.5" AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$454.99 $169.99
Davidson Defense 'Buckley' 16
Davidson Defense 'Buckley' 16" LR-308 .308 Win Stainless Rifle Full Build Kit
$499.99 $444.99
Live Free Armory LR-308 Matched Receiver Set - Graphite Black
Live Free Armory LR-308 Matched Receiver Set - Graphite Black
$249.99 $199.99
Davidson Defense 'Avathar' 16
Davidson Defense 'Avathar' 16" AR-15 .223 Nitride Rifle Complete Upper Build Kit
$574.99 $289.99
Davidson Defense 'Knightwing' 8.5
Davidson Defense 'Knightwing' 8.5" AR-15 9mm Nitride Pistol Complete Upper Build Kit
$594.99 $279.99
Davidson Defense 'Lava' 20
Davidson Defense 'Lava' 20" LR-308 .308 Win Nitride Rifle Full Build Kit
$879.99 $564.99
Spikes Tactical ST15 Spider Logo Lower Build Kit Featuring Lakota Ops Special Operations Stock
Spikes Tactical ST15 Spider Logo Lower Build Kit Featuring Lakota Ops Special Operations Stock
$389.99 $174.99
3rd Gen Tactical Humboldt Lower Receiver - Black
3rd Gen Tactical Humboldt Lower Receiver - Black
$249.99 $195.99

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  2. AR-15 & AR-10 Build Kits
  • Upper Build Kits Upper Build Kits
  • Lower Build Kits Lower Build Kits
  • Complete Upper Build Kits Complete Upper Build Kits
  • Full Build Kits (Everything Minus Lower) Full Build Kits (Everything Minus Lower)
  • Side Charging Upper Receiver Builds Side Charging Upper Receiver Builds
  • Budget Builds $199.99 and Under Budget Builds $199.99 and Under
  • Top Shelf Build Kits Top Shelf Build Kits
  • Upper Build Starter Kits Upper Build Starter Kits
  • Finish Your Build Kit Finish Your Build Kit
  • Receiver Sets Receiver Sets
  • Builder Sets Builder Sets

Products [918]

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*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - Gray (upper only)
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - Gray (upper only)
$575.00
Pre-Order - This item will be available on 3/1/2023.
Add To Cart
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - FDE (upper only)
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - FDE (upper only)
$575.00
Pre-Order - This item will be available on 3/1/2023.
Add To Cart
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - Black (upper only)
*Pre-Order* Matador Arms Mat-9 Complete 9mm Upper Gen.2 - Black (upper only)
$575.00
Pre-Order - This item will be available on 3/1/2023.
Add To Cart
7.5
7.5" 9mm Assembled Upper w/ MLOK Handguard - USA Engraved Powder Coated AR-15 Receiver, T Marks, 7075 Aluminum, A2 Birdcage
$464.99 $149.99 Sale
In Stock
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MMC 'Jackalope Hunter' 9
MMC 'Jackalope Hunter' 9" AR-15 .22 LR Nitride Pistol Complete Upper Build Kit
$739.99 $424.99 Sale
In Stock
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MMC '22-SixLock' 9
MMC '22-SixLock' 9" AR-15 .22 LR Nitride Pistol Complete Upper Build Kit
$779.99 $464.99 Sale
In Stock
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Assembled Upper Receiver: Sylvan Arms AR-15 9mm Magwell Adapter for Glock Magazines + Matador Arms Montgo-9 Complete 9mm Upper
Assembled Upper Receiver: Sylvan Arms AR-15 9mm Magwell Adapter for Glock Magazines + Matador Arms Montgo-9 Complete 9mm Upper
$879.99 $639.99 Sale
In Stock
Add To Cart
Davidson Defense 'Asrah' 7.5
Davidson Defense 'Asrah' 7.5" AR-15 5.56 NATO Nitride Pistol Full Build Kit
$659.99 $304.99 Sale
In Stock
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MMC 'Xander' 7.5
MMC 'Xander' 7.5" AR-15 5.56 NATO Nitride Pistol Full Build Kit
$669.99 $319.99 Sale
In Stock
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Davidson Defense 'Sho't Kal Dalet' 7.5
Davidson Defense 'Sho't Kal Dalet' 7.5" AR-15 7.62x39 Nitride Pistol Full Build Kit
$659.99 $309.99 Sale
In Stock
Select Options
Davidson Defense 'Vali' 7.5
Davidson Defense 'Vali' 7.5" AR-15 5.56 NATO Nitride Pistol Full Build Kit
$649.99 $299.99 Sale
In Stock
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Davidson Defense 'Red Mercury' 7.5
Davidson Defense 'Red Mercury' 7.5" AR-15 7.62x39 Nitride Pistol Full Build Kit
$654.99 $304.99 Sale
In Stock
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Davidson Defense 'Benedictus' 10.5
Davidson Defense 'Benedictus' 10.5" AR-15 .223 Nitride Full Build Kit
$669.99 $319.99 Sale
In Stock
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Davidson Defense 'Corncrake' 8.5
Davidson Defense 'Corncrake' 8.5" AR-15 9mm Nitride Pistol Full Build Kit
$659.99 $309.99 Sale
In Stock
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Davidson Defense 'Megara' 4
Davidson Defense 'Megara' 4" AR-15 9mm Nitride Full Build Kit
$649.99 $299.99 Sale
In Stock
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Davidson Defense 'Mantle' 7.5
Davidson Defense 'Mantle' 7.5" AR-15 5.56 NATO Nitride Full Build Kit
$654.99 $304.99 Sale
In Stock
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Davidson Defense 'Audun' 16
Davidson Defense 'Audun' 16" AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$559.99 $244.99 Sale
In Stock
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Assembled Upper -16
Assembled Upper -16" 223 Wylde 1:8T Rifle Gas Stainless Barrel, 12" MLOK Handguard, Bird Cage Muzzle Device
$514.99 $199.99 Sale
In Stock
Add To Cart
Assembled Upper -16
Assembled Upper -16" 556 1:8T Rifle Gas Nitride Barrel, 12" MLOK Handguard, Bird Cage Muzzle Device
$514.99 $199.99 Sale
In Stock
Add To Cart
Assembled Upper - 16
Assembled Upper - 16" 556 1:8T Rifle Gas Nitride Barrel, 12" MLOK Handguard, 6 Port Phosphate Black Muzzle Device
$514.99 $199.99 Sale
In Stock
Add To Cart
Davidson Defense 'Einar' 16
Davidson Defense 'Einar' 16" AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$574.99 $259.99 Sale
In Stock
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Davidson Defense 'Einar' 16
Davidson Defense 'Einar' 16" AR-15 5.56 NATO Nitride Rifle Complete Upper Build Kit
$639.99 $324.99 Sale
In Stock
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Davidson Defense 'Einar' 16
Davidson Defense 'Einar' 16" AR-15 5.56 NATO Nitride Rifle Full Build Kit
$704.99 $389.99 Sale
In Stock
Select Options
Davidson Defense 'Brynjar' 16.5
Davidson Defense 'Brynjar' 16.5" AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$574.99 $259.99 Sale
In Stock
Select Options
1 2 3 4 5 6 7 ...39 Next Page View All
Our MMC Combos AR-15 and LR-308 Upper Build Kits make it easy to get started on your custom build. Our expert team plans these combos to make sure that all parts are compatible to take any guess work out of the equation. We carry combos that fit any budget from plinker to competition and anything in between. Some of the brands that are featured in our combos are MMC Armory, Faxon, Fail Zero, Fortis, Odin Works, Guntech, Armaspec, 3rd Gen Tactical, Battle Arms Developement, and many more. We also have options in a wide variety of calibers such as .223 Wylde, 5.56 NATO, .224 Valkyrie, 350 Legend, .458 SOCOM, 12.7x42 (.50 Beowulf), .450 Bushmaster, 9mm, 7.62x39, 300 Blackout (AAC), 6.5 Creedmoor, 6.5 Gendel, 45 ACP, and .243 WIN
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