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"Precision barrels and AR rifles built to perform"

DIA supplies barrels and AR-style rifles, including carbine and rifle-length barrels and DB15 tactical platforms. We stock a selection of barrels in 7.62x39, .308, and .223/223 Wylde.

5.0★★★★★(5 verified DIA reviews)
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431
Products
166
In Stock
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Founded
USA
Origin

All DIA Products (166)

Buy DIAMONDBACK SDR 357 Mag/38 Special 2in 6rd Stainless Revolver (DB0700S701) online DIAMONDBACK SDR 357 Mag/38 Special 2in 6rd Stainless Revolver (DB0700S701) Buy Diamondback DB2380B001 .300 Blackout DB15 SBR 10" M-LOK 30rd Black online Diamondback DB2380B001 .300 Blackout DB15 SBR 10" M-LOK 30rd Black Buy "Diamondback DB9 Compact Pistol - Mint 9mm 3"" Barrel Nickel Boron Slide" DB9MSS online "Diamondback DB9 Compact Pistol - Mint 9mm 3"" Barrel Nickel Boron Slide" DB9MSS Buy Diamondback DB0700P711 9mm 6Rd Fiber Optic Stainless Revolver online Diamondback DB0700P711 9mm 6Rd Fiber Optic Stainless Revolver Buy DIAMONDBACK DB197AK042 5.56 10 In 30+1 Burnt Bronze SBA3 Brace online DIAMONDBACK DB197AK042 5.56 10 In 30+1 Burnt Bronze SBA3 Brace Buy DIAMONDBACK DB177AK621 5.56 16 In 30+1 Chocolate Chip FDE online DIAMONDBACK DB177AK621 5.56 16 In 30+1 Chocolate Chip FDE Buy Diamond Radian Bow Package Forrest 10-55 lbs. LH online Diamond Radian Bow Package Forrest 10-55 lbs. 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LH Buy Diamond B13340 Deploy SB RAK Bow Carbon Fiber 60 lbs RH 330 fps 31.5" online Diamond B13340 Deploy SB RAK Bow Carbon Fiber 60 lbs RH 330 fps 31.5" Buy Diamond A10960 Edge XT Bow Moss Oak 20-70lb 19-31in RH 300FPS online Diamond A10960 Edge XT Bow Moss Oak 20-70lb 19-31in RH 300FPS Buy Diamondback SG08050011 Southern Grind Quill 3" Tanto Satin Titanium Knife online Diamondback SG08050011 Southern Grind Quill 3" Tanto Satin Titanium Knife Buy Diamondback 223WR18H50B7R 18" Heavy Barrel 223 Wylde Rifle Length online Diamondback 223WR18H50B7R 18" Heavy Barrel 223 Wylde Rifle Length Buy Diamondback 556C16M50B9 556NATO 16in Black Optics Ready online Diamondback 556C16M50B9 556NATO 16in Black Optics Ready Buy Diamondback 308M135M50B10 .308 Win 13.5" Barrel Black Nitride 4150 Steel online Diamondback 308M135M50B10 .308 Win 13.5" Barrel Black Nitride 4150 Steel Buy Diamondback 762X39P7H50B95R DB Barrel 7.62x39mm 7" Black Nitride 4150 C... online Diamondback 762X39P7H50B95R DB Barrel 7.62x39mm 7" Black Nitride 4150 C... Buy Diamondback 762X39C10M50B95R DB Barrel 7.62x39mm 10" Carbine-Length Bla... online Diamondback 762X39C10M50B95R DB Barrel 7.62x39mm 10" Carbine-Length Bla... Buy Diamondback 300P10H50B8R 10" .300 Blackout Barrel 4150 CMV Nitride Finish online Diamondback 300P10H50B8R 10" .300 Blackout Barrel 4150 CMV Nitride Finish Buy Diamondback 300P85H50B8R DB Barrel 300 Blackout 8.50" Pistol-Length Bla... online Diamondback 300P85H50B8R DB Barrel 300 Blackout 8.50" Pistol-Length Bla... Buy Diamondback 65CR20M416SS8FR DB Barrel 6.5 Creedmoor 20" Rifle-Length Fl... online Diamondback 65CR20M416SS8FR DB Barrel 6.5 Creedmoor 20" Rifle-Length Fl... Buy Diamondback 308R18M50B10R Barrel .308 Win 18 in Black Nitride Medium Profil online Diamondback 308R18M50B10R Barrel .308 Win 18 in Black Nitride Medium Profil Buy Diamondback 308M16L50B10R DB Barrel 308 Win 16" Mid-Length Black Nitrid... online Diamondback 308M16L50B10R DB Barrel 308 Win 16" Mid-Length Black Nitrid... Buy Diamondback 762X39C16M50B95R 16" 7.62x39mm AR-15 Barrel Black Nitride online Diamondback 762X39C16M50B95R 16" 7.62x39mm AR-15 Barrel Black Nitride Buy Diamondback Firearms 65M18M50B8R 6.5 Grendel 18 in Black Nitride Barrel online Diamondback Firearms 65M18M50B8R 6.5 Grendel 18 in Black Nitride Barrel Buy Diamondback 556C16MF50B8R OEM Replacement (M4 Cont online Diamondback 556C16MF50B8R OEM Replacement (M4 Cont Buy Diamondback 556C16M50B8R 16" 5.56 NATO AR-15 Barrel Black Nitride 1:8 Twist online Diamondback 556C16M50B8R 16" 5.56 NATO AR-15 Barrel Black Nitride 1:8 Twist Buy Diamondback 556C16H50B8NYR 16" 5.56 NATO Barrel Black Nitride 1:8 Twist online Diamondback 556C16H50B8NYR 16" 5.56 NATO Barrel Black Nitride 1:8 Twist Buy Diamondback 300P16H50B8R 16" .300 Blackout Barrel 1:8 Twist Nitride Finish online Diamondback 300P16H50B8R 16" .300 Blackout Barrel 1:8 Twist Nitride Finish Buy Diamondback DB2377K001 DB15 SBR 11.5" 223 Rem/5.56 NATO Matte Black online Diamondback DB2377K001 DB15 SBR 11.5" 223 Rem/5.56 NATO Matte Black Buy Diamondback DBAM29-MAG17R 9mm 17 Rd Black Sub-Compact Magazine online Diamondback DBAM29-MAG17R 9mm 17 Rd Black Sub-Compact Magazine Buy Diamondback DBAM29-MAG12R 9mm 12 Rd Black Sub-Compact Pistol Magazine online Diamondback DBAM29-MAG12R 9mm 12 Rd Black Sub-Compact Pistol Magazine Buy Diamondback DBAM29MAG17RFDE 9mm 17rd Magazine Black/Flat Dark Earth online Diamondback DBAM29MAG17RFDE 9mm 17rd Magazine Black/Flat Dark Earth

About DIA

DIA offers precision barrels and AR-style rifles designed for shooters who want reliable performance and consistent accuracy. Their product range includes short carbine barrels, pistol-length and rifle-length options, and complete DB15 semi-automatic rifles suited to tactical, range, and home defense roles. Barrels are produced in a variety of calibers such as 7.62x39, .308 Winchester, and .223/223 Wylde, with finishes like black nitride and materials such as 4150 steel. DIA components are designed to fit common AR platforms and give builders and shooters straightforward, dependable options for upgrades and builds.

Headquarters

Established

-

Country of Origin

USA

History & Heritage

DIA is known for producing barrels and AR-style firearms and components. The brand grew by offering common calibers and barrel lengths that meet the needs of sport shooters, hobbyist builders, and tactical users. Specific founding details and headquarters are not provided here.

Notable Products

DB15 AR-style rifles and the DB series barrels in 7.62x39, .308, and 223/223 Wylde

Why Choose DIA?

Choose DIA when you want straightforward, compatible barrels and AR platforms that deliver consistent performance and value.

Ready to Shop DIA?

Choose DIA when you want straightforward, compatible barrels and AR platforms that deliver consistent performance and value....

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