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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.
All DIA Products (170)
DIAMONDBACK SDR 357 Mag/38 Special 2in 6rd Stainless Revolver (DB0700S701)
Diamondback DB2380B001 .300 Blackout DB15 SBR 10" M-LOK 30rd Black
"Diamondback DB9 Compact Pistol - Mint 9mm 3"" Barrel Nickel Boron Slide" DB9MSS
Diamondback DB0700P711 9mm 6Rd Fiber Optic Stainless Revolver
DIAMONDBACK DB197AK042 5.56 10 In 30+1 Burnt Bronze SBA3 Brace
DIAMONDBACK DB177AK621 5.56 16 In 30+1 Chocolate Chip FDE
Diamond Radian Bow Package Forrest 10-55 lbs. LH
Diamond Radian Bow Package Sandstone 10-55 lbs. LH
Diamond Radian Bow Package Bottomland 10-55 lbs. LH
Diamond Radian Bow Package Black 10-55 lbs. LH
Diamond Radian Bow Package Forrest 10-55 lbs. RH
Diamond Radian Bow Package Sandstone 10-55 lbs. RH
Diamond Radian Bow Package Black 10-55 lbs. RH
Diamondback Ventra 30 Cal Direct Thread Suppressor .300 RUM 1.64 Dia Inconel FDE
Diamondback Ventra 556 Direct Thread Suppressor 5.56 NATO 1.55 Dia Inconel FDE
Diamondback Ventra 22 Cal Direct Thread Suppressor 5.7x28 1.125 Dia Inconel FDE
Diamondback DBS30i .300 RUM 5.88 In 5/8x24 Inconel Black Cerakote
Diamondback Ventra 556 Direct Thread Suppressor 5.56 NATO 1.55 Dia Inconel Black Cerakote
Diamondback DBS22i 22LR 5.5 In Direct Thread 1/2x28 Inconel Black Cerakote
Diamondback SDR Revolver 9 mm 2 in. Glass Bead Stainless DA/SA 6 rd.
Diamondback SDR Revolver 357 Mag 3 in. Glass Bead Stainless DA/SA 6 rd
Diamondback SDR Revolver 357 Mag 2 in. Glass Bead Stainless DAO 6 rd
Diamondback SDR-A Revolver 38 Spl 2 in. Glass Bead Aluminum DOA 6 rd.
Diamondback SDR Revolver 357 Mag 2 in. Polished Stainless DAO 6 rd
Diamond Atomic Bow Package Purple 12-24 in. 29 lbs. LH
Diamond B13340 Deploy SB RAK Bow Carbon Fiber 60 lbs RH 330 fps 31.5"
Diamond A10960 Edge XT Bow Moss Oak 20-70lb 19-31in RH 300FPS
Diamondback SG08050011 Southern Grind Quill 3" Tanto Satin Titanium Knife
Diamondback 223WR18H50B7R 18" Heavy Barrel 223 Wylde Rifle Length
Diamondback 556C16M50B9 556NATO 16in Black Optics Ready
Diamondback 308M135M50B10 .308 Win 13.5" Barrel Black Nitride 4150 Steel
Diamondback 762X39P7H50B95R DB Barrel 7.62x39mm 7" Black Nitride 4150 C...
Diamondback 762X39C10M50B95R DB Barrel 7.62x39mm 10" Carbine-Length Bla...
Diamondback 300P10H50B8R 10" .300 Blackout Barrel 4150 CMV Nitride Finish
Diamondback 300P85H50B8R DB Barrel 300 Blackout 8.50" Pistol-Length Bla...
Diamondback 65CR20M416SS8FR DB Barrel 6.5 Creedmoor 20" Rifle-Length Fl...
Diamondback 308R18M50B10R Barrel .308 Win 18 in Black Nitride Medium Profil
Diamondback 308M16L50B10R DB Barrel 308 Win 16" Mid-Length Black Nitrid...
Diamondback 762X39C16M50B95R 16" 7.62x39mm AR-15 Barrel Black Nitride
Diamondback Firearms 65M18M50B8R 6.5 Grendel 18 in Black Nitride Barrel
Diamondback 556M16M50B8R 16" 5.56 NATO AR-15 Barrel Black Nitride 1:8 Twist
Diamondback 556C16MF50B8R OEM Replacement (M4 Cont
Diamondback 556C16M50B8R 16" 5.56 NATO AR-15 Barrel Black Nitride 1:8 Twist
Diamondback 556C16H50B8NYR 16" 5.56 NATO Barrel Black Nitride 1:8 Twist
Diamondback 300P16H50B8R 16" .300 Blackout Barrel 1:8 Twist Nitride Finish
Diamondback DB2377K001 DB15 SBR 11.5" 223 Rem/5.56 NATO Matte Black
Diamondback DBAM29-MAG17R 9mm 17 Rd Black Sub-Compact Magazine
Diamondback DBAM29-MAG12R 9mm 12 Rd Black Sub-Compact Pistol Magazine
About DIA
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.
Hot DIA Items June 2026
Trending right now based on the last 30 days of TheGunDock orders + page views.
Diamondback Sidekick Double/Single Action Revolver .22 LR/ W
Diamondback Sidekick 22 LR/WMR Revolver 4.5" Black Cerakote
DiamondBack DB15 Carbon 5.56 NATO 30+1 16 Jesse James Blue C
Diamondback DB0300P031 9mm Pistol 12+1/17+1 Black/Stainless
Diamondback Firearms DB380 6 Round Magazine Flat Bottom MGDB
Diamondback 762X39P7H50B95R DB Barrel 7.62x39mm 7" Black Nit
Diamondback AM2 9mm Pistol 3.5" Barrel Black
Diamondback DB15 SBR NFA Matte Black 30+1 223 Rem/5.56 NATO
Shop DIA Products
Diamondback DB2380B001 .300 Blackout DB15 SBR 10" M-LOK 30rd
DIAMONDBACK SDR 357 Mag/38 Special 2in 6rd Stainless Revolve
Diamondback 300P10H50B8R 10" .300 Blackout Barrel 4150 CMV N
Diamondback 762X39C10M50B95R DB Barrel 7.62x39mm 10" Carbine
Diamondback 762X39P7H50B95R DB Barrel 7.62x39mm 7" Black Nit
Diamondback 308M135M50B10 .308 Win 13.5" Barrel Black Nitrid
DBB BBL 556 16" CARB MED 1-9 BLK
Diamondback 223WR18H50B7R 18" Heavy Barrel 223 Wylde Rifle L
Diamond Atomic Bow Package Purple 12-24 in. 29 lbs. LH
DIAMONDBACK DB1911 45ACP 8+1 5" Match Grade Barrel Stainless
Diamondback Sidekick 22 LR/WMR Revolver 4.5" Black Cerakote
Diamondback DB9 9mm Pistol 3" Barrel Black
DIA News & Articles
Firearm Shipping Restrictions by State (2026 Update)
State-by-state guide to firearm and ammunition shipping for online buyers and FFL dealers. Current as of May 2026. Cover...
Damaged in Transit: How TheGunDock Handles Shipping Claims on Firearms and Ammo
When a firearm or ammo shipment arrives damaged, the claim process matters. TheGunDock walks through what to do, what we...
The Springfield KUNA: Roller-Delayed 9mm Pistol That's Shaking Up the PDW Market
The Springfield Armory KUNA — a roller-delayed 9mm pistol built in partnership with Croatia's HS Produkt — has becom...
The Strait of Hormuz: 2,500 Years of Trade, Arms, and Conflict
A twenty-one-mile-wide choke point has shaped the movement of goods — and weapons — across half the ancient and mode...
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