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  1. Home
  2. AR-15 & AR-10 Build Kits
  3. Upper Build Kits
  4. Shop by Caliber > AR-15 & LR-308/AR-10 Upper Build Kits
  5. 5.56 NATO > AR-15 Upper Build Kit

5.56 NATO > AR-15 Upper Build Kit



Top Sellers

Davidson Defense Aegis 7.5-inch Pistol-Gas 1:7 Stainless Steel 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
Davidson Defense Aegis 7.5-inch Pistol-Gas 1:7 Stainless Steel 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
$149.99 Original price $109.99
Davidson Defense 'Scorpion Stinger' 8.5
Davidson Defense 'Scorpion Stinger' 8.5"-inch AR-15 .300BLK Parkerized Pistol Upper Build Kit
$154.99 Original price $114.99
Davidson Defense Show Stopper 16.5-inch AR-15 5.56 NATO Rifle Upper Build Kit
Davidson Defense Show Stopper 16.5-inch AR-15 5.56 NATO Rifle Upper Build Kit
$179.99 Original price $134.99
Davidson Defense Aegis 16-inch Carbine-Gas 1:8 Stainless Steel 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit
Davidson Defense Aegis 16-inch Carbine-Gas 1:8 Stainless Steel 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit
$199.99 Original price $149.99
Davidson Defense Aegis Lightweight 10.5-inch Carbine-Gas 1:8 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
Davidson Defense Aegis Lightweight 10.5-inch Carbine-Gas 1:8 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
$159.99 Original price $124.99
Cobalt Kinetics 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Pistol Upper Receiver
Cobalt Kinetics 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Pistol Upper Receiver
$634.99 Original price $474.99
Davidson Defense Warden 10.5-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat Keymod Handguard Pistol Upper Build Kit
Davidson Defense Warden 10.5-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat Keymod Handguard Pistol Upper Build Kit
$164.99 Original price $124.99
Davidson Defense Warden 16.5-inch Mid-Gas 1:7 5.56 NATO AR-15 Freefloat Keymod Handguard Rifle Upper Build Kit
Davidson Defense Warden 16.5-inch Mid-Gas 1:7 5.56 NATO AR-15 Freefloat Keymod Handguard Rifle Upper Build Kit
$174.99 Original price $134.99
Davidson Defense Last Impact 16-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat Keymod Handguard Rifle Complete Upper Build
Davidson Defense Last Impact 16-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat Keymod Handguard Rifle Complete Upper Build
$259.99 Original price $194.99
Davidson Defense LAZR 18-inch Rifle-Gas 5.56 NATO AR-15 Rifle Upper Build Kit, Plan B A7 Flash Hider
Davidson Defense LAZR 18-inch Rifle-Gas 5.56 NATO AR-15 Rifle Upper Build Kit, Plan B A7 Flash Hider
$249.99 Original price $189.99

New Releases

Olight ArkPro Ultra Series Flat Unibody EDC Flashlight w/ Multi-Light, Olive Green CW
Olight ArkPro Ultra Series Flat Unibody EDC Flashlight w/ Multi-Light, Olive Green CW
$171.99 Original price $129.99
Davidson Defense KeyMod Rail Ultra-Slim Freefloat 10-inch Handguard
Davidson Defense KeyMod Rail Ultra-Slim Freefloat 10-inch Handguard
$34.99 Original price $21.99
Davidson Defense No-Buffer AR-15 Rifle Lower Build Kit, Rare Breed FRT 15L3 Flat Trigger, Adaptive Tactical EX Performance Adjustable Stock
Davidson Defense No-Buffer AR-15 Rifle Lower Build Kit, Rare Breed FRT 15L3 Flat Trigger, Adaptive Tactical EX Performance Adjustable Stock
Free Shipping.
$717.99 Original price $539.99
Davidson Defense No-Buffer AR-15 Rifle Lower Build Kit, Rare Breed FRT 15L3 Flat Trigger, Special Operations Stock
Davidson Defense No-Buffer AR-15 Rifle Lower Build Kit, Rare Breed FRT 15L3 Flat Trigger, Special Operations Stock
Free Shipping.
$697.99 Original price $524.99
5.56 NATO > AR-15 Upper Build Kit subcategories
  • Rifle Length > 5.56 NATO > AR-15 Upper Build Kit
  • Rifle Length > 5.56 NATO > AR-15 Upper Build Kits
  • Pistol Length > 5.56 NATO > AR-15 Upper Build Kits

Products [144]

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DD 'Blacktail' 10.5
DD 'Blacktail' 10.5" AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$244.99 $184.99 Sale
In Stock.
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DD 'Silver Sentinel' 16-inch AR-15 5.56 NATO Stainless Rifle Upper Build Kit
DD 'Silver Sentinel' 16-inch AR-15 5.56 NATO Stainless Rifle Upper Build Kit
$214.99 $159.99 Sale
In Stock.
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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 Sale
In Stock. Free Shipping.
Add To Cart
Aero Precision AR15 Complete Upper, 20
Aero Precision AR15 Complete Upper, 20" 5.56 w/ Pinned FSB, MOE Handguard - Black
$434.99 $389.99 Sale
In Stock. Free Shipping.
Add To Cart
DD 'Rogue Renegade' 16
DD 'Rogue Renegade' 16" AR-15 5.56 NATO Stainless Rifle Upper Build Kit
$209.99 $159.99 Sale
In Stock.
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'Raven' 7.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
'Raven' 7.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$174.99 $129.99 Sale
In Stock.
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'Nimbus Mist ' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
'Nimbus Mist ' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$224.99 $169.99 Sale
In Stock.
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'Vali V4' 7.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
'Vali V4' 7.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$184.99 $139.99 Sale
In Stock.
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'Sirocco' 7.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
'Sirocco' 7.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$189.99 $144.99 Sale
In Stock.
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'Plasma Blast ' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
'Plasma Blast ' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$214.99 $159.99 Sale
In Stock.
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'ARKX 556' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
'ARKX 556' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$344.99 $259.99 Sale
In Stock. Free Shipping.
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Davidson Defense 'Left Handed Mod 1' 16.5-inch AR-15 5.56 NATO Nitride Left-Handed Rifle Upper Build Kit
Davidson Defense 'Left Handed Mod 1' 16.5-inch AR-15 5.56 NATO Nitride Left-Handed Rifle Upper Build Kit
$199.99 $149.99 Sale
In Stock.
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Davidson Defense 'Master Key' 7.5-inch AR-15 5.56 NATO Phosphate Pistol Upper Build Kit
Davidson Defense 'Master Key' 7.5-inch AR-15 5.56 NATO Phosphate Pistol Upper Build Kit
$144.99 $109.99 Sale
Back Order.
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Davidson Defense Aegis 7.5-inch Pistol-Gas 1:7 Nitrided 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
Davidson Defense Aegis 7.5-inch Pistol-Gas 1:7 Nitrided 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
$169.99 $124.99 Sale
In Stock.
Select Options
Davidson Defense Aegis 16-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit
Davidson Defense Aegis 16-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit
$184.99 $139.99 Sale
In Stock.
Select Options
Davidson Defense 'Avalanche' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
Davidson Defense 'Avalanche' 16-inch AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$194.99 $144.99 Sale
In Stock.
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Davidson Defense 'Tumbleweed' 7.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
Davidson Defense 'Tumbleweed' 7.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$169.99 $124.99 Sale
In Stock.
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Davidson Defense Aegis 16-inch Carbine-Gas 1:7 Nitrided 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Complete Upper Build
Davidson Defense Aegis 16-inch Carbine-Gas 1:7 Nitrided 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Complete Upper Build
$189.99 $139.99 Sale
In Stock.
Select Options
Davidson Defense Aegis Lightweight 16.5-inch Mid-Gas 1:7 5.56 NATO AR-15 15-inch Freefloat M-Lok Handguard Rifle Upper Build Kit
Davidson Defense Aegis Lightweight 16.5-inch Mid-Gas 1:7 5.56 NATO AR-15 15-inch Freefloat M-Lok Handguard Rifle Upper Build Kit
$184.99 $139.99 Sale
In Stock.
Select Options
Davidson Defense Aegis Lightweight 16.5-inch Mid-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit
Davidson Defense Aegis Lightweight 16.5-inch Mid-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit
$179.99 $139.99 Sale
In Stock.
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Davidson Defense 'More Perfect Union' 16.5
Davidson Defense 'More Perfect Union' 16.5" AR-15 5.56 NATO Nitride Rifle Upper Build Kit
$394.99 $299.99 Sale
In Stock. Free Shipping.
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Davidson Defense 'Scorpion Stinger' 8.5
Davidson Defense 'Scorpion Stinger' 8.5"-inch AR-15 .300BLK Parkerized Pistol Upper Build Kit
$154.99 $114.99 Sale
In Stock.
Select Options
Davidson Defense Aegis 7.5-inch Pistol-Gas 1:7 Stainless Steel 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
Davidson Defense Aegis 7.5-inch Pistol-Gas 1:7 Stainless Steel 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit
$149.99 $109.99 Sale
In Stock.
Select Options
Davidson Defense 'Capture' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
Davidson Defense 'Capture' 10.5-inch AR-15 5.56 NATO Nitride Pistol Upper Build Kit
$169.99 $124.99 Sale
In Stock.
Select Options
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