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AR-15 Diamondback

Diamondback is a family-owned American firearms manufacturer based on Florida’s Space Coast, known for precision engineering and in-house production standards. The brand offers a diverse lineup, including rifles built on proven AR platforms, versatile ar ak pistols, and innovative revolvers like the Sidekick, which features both.22LR and.22Mag cylinders for flexible use. Diamondback also supplies high-quality barrels for custom builds and upgrades. Featured products include popular calibers such as 5.56x45 and.223 / 5.56, with models designed for reliability and performance in both recreational and professional settings. Diamondback’s commitment to American manufacturing and quality control ensures every firearm meets rigorous standards. Browse Diamondback to shop performance-driven firearms and components for sale.

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20 Product(s)
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Diamondback 223WR18H50B7 223 Wylde 18" Black QPQ Stainless Steel Barrel

Diamondback 223WR18H50B7 223 Wylde 18" Black QPQ Stainless Steel Barrel

$79 99 $91.00
In Stock
Diamondback DB Barrel 223WM18M50B7R 18" .223 Wylde 4150 CMV Black Nitride AR-15 Barrel

Diamondback DB Barrel 223WM18M50B7R 18" .223 Wylde 4150 CMV Black Nitride AR-15 Barrel

$84 00
In Stock
Diamondback 300P10H50B8R .300 Blackout 10" Pistol-Length Barrel Heavy Nitride

Diamondback 300P10H50B8R .300 Blackout 10" Pistol-Length Barrel Heavy Nitride
$80 00
In Stock
Diamondback DB Barrel 762X39P7H50B95R 7" 7.62x39mm 4150 CMV Black Nitride AR-15 Compatible.

Diamondback DB Barrel 762X39P7H50B95R 7" 7.62x39mm 4150 CMV Black Nitride AR-15 Compatible.

$73 00
In Stock
Only 2 Left!
Diamondback DB Barrel 762X39C10M50B95R 10" 7.62x39mm 4150 CMV Steel Black Nitride AR-15 Carbine-Length Medium Profile.

Diamondback DB Barrel 762X39C10M50B95R 10" 7.62x39mm 4150 CMV Steel Black Nitride AR-15 Carbine-Length Medium Profile.

$83 00
In Stock
Diamondback DB Barrel 762X39C16M50B95R 16" 7.62x39mm 4150 CMV Black Nitride Carbine-Length AR-15 Barrel

Diamondback DB Barrel 762X39C16M50B95R 16" 7.62x39mm 4150 CMV Black Nitride Carbine-Length AR-15 Barrel

$94 00
In Stock
Diamondback DB Barrel .300 Blackout 16" Pistol Length Black Nitride

Diamondback DB Barrel .300 Blackout 16" Pistol Length Black Nitride

$94 00
In Stock
Diamondback 9X1945M50B984NFR DB Barrel 9mm Luger 4.50" Black Nitride 4150 Chrome Moly Vanadium Steel

Diamondback 9X1945M50B984NFR DB Barrel 9mm Luger 4.50" Black Nitride 4150 Chrome Moly Vanadium Steel

$51 00
In Stock
Only 6 Left!
Diamondback DB Barrel 300P85H50B8R 8.50" 300 Blackout 4150 CMV Nitride AR-15 Pistol-Length Barrel

Diamondback DB Barrel 300P85H50B8R 8.50" 300 Blackout 4150 CMV Nitride AR-15 Pistol-Length Barrel

$72 00
In Stock
Diamondback DB Barrel 65M18M50B8R 18" 6.5 Grendel Black Nitride 4150 CMV AR-15

Diamondback DB Barrel 65M18M50B8R 18" 6.5 Grendel Black Nitride 4150 CMV AR-15
$113 00
In Stock
Diamondback DB Barrel 556C10M50B8R 10" 5.56x45mm NATO 4150 CMV Black Nitride AR-15 Carbine-Length

Diamondback DB Barrel 556C10M50B8R 10" 5.56x45mm NATO 4150 CMV Black Nitride AR-15 Carbine-Length

$81 00
In Stock
Diamondback DB Barrel 556P7H50B8R 7" 5.56x45mm NATO 4150 Chrome Moly Black Nitride AR-15 Pistol-Length

Diamondback DB Barrel 556P7H50B8R 7" 5.56x45mm NATO 4150 Chrome Moly Black Nitride AR-15 Pistol-Length

$70 00
In Stock
Only 3 Left!
Diamondback DB Barrel 65CR24M50B8 24" 6.5 Creedmoor 4150 CMV Black Nitride Rifle-Length AR-15 Compatible.

Diamondback DB Barrel 65CR24M50B8 24" 6.5 Creedmoor 4150 CMV Black Nitride Rifle-Length AR-15 Compatible.

$157 00
In Stock
Only 3 Left!
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Diamondback DB Barrel 65CR20M416SS8FR 20" 6.5 Creedmoor 416 Stainless Fluted Rifle-Length Medium Profile AR-15

Diamondback DB Barrel 65CR20M416SS8FR 20" 6.5 Creedmoor 416 Stainless Fluted Rifle-Length Medium Profile AR-15

$150 00
In Stock
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Diamondback Firearms DB Barrel 556M16M50B8R 16" 5.56x45mm NATO 4150 CMV Black Nitride AR-15 Platform

Diamondback Firearms DB Barrel 556M16M50B8R 16" 5.56x45mm NATO 4150 CMV Black Nitride AR-15 Platform

$86 00
In Stock
Diamondback DB Barrel 556C16MF50B8R 16" 5.56x45mm NATO 4150 Chrome Moly Vanadium Black Nitride AR-15

Diamondback DB Barrel 556C16MF50B8R 16" 5.56x45mm NATO 4150 Chrome Moly Vanadium Black Nitride AR-15

$86 00
In Stock
Diamondback DB Barrel 556C16M50B8R 16" 5.56x45mm NATO Black Nitride 4150 CMV Steel AR-15 Carbine-Length

Diamondback DB Barrel 556C16M50B8R 16" 5.56x45mm NATO Black Nitride 4150 CMV Steel AR-15 Carbine-Length
$86 00
In Stock
Diamondback DB Barrel 556C16H50B8NYR 16" 5.56x45mm NATO Chrome Moly Vanadium Black Nitride AR-15 Compatible

Diamondback DB Barrel 556C16H50B8NYR 16" 5.56x45mm NATO Chrome Moly Vanadium Black Nitride AR-15 Compatible

$86 00
In Stock
Diamondback DB Barrel 556P55H50B8R 5.50" 5.56x45mm NATO Black Nitride 4150 CMV Steel AR-15 Pistol-Length.

Diamondback DB Barrel 556P55H50B8R 5.50" 5.56x45mm NATO Black Nitride 4150 CMV Steel AR-15 Pistol-Length.

Out of Stock
Diamondback 9X1910M50B984NFR DB Barrel 9mm Luger 10" Black Nitride 4150 Chrome Moly Vanadium Steel

Diamondback 9X1910M50B984NFR DB Barrel 9mm Luger 10" Black Nitride 4150 Chrome Moly Vanadium Steel

Out of Stock
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