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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 (167)
Diamondback DBAM29MAG17RFDE 9mm 17rd Magazine Black/Flat Dark Earth
Diamondback DBX Handgun Magazine 5.7x28mm 20/Rd
Diamondback DB9 Gen 4 Magazine - 9mm Luger, 6 Round, Steel, Black Finish
Diamondback DB9MAGG4 DB9G4 9mm Luger 6 Round Steel Black Finish
Diamondback DBAM29 9mm Magazine 17 Round Stainless
Diamondback DBAM29MAG10R 9mm Luger 12 Round Stainless Steel Finish
Diamondback Firearms DB9 6-Round 9mm Detachable Black Magazine
Diamondback DB380 Magazine 6rd Finger Extension Black
Diamondback Firearms DB380 6 Round Magazine Flat Bottom MGDB0009-G10
Diamondback Knifeworks SG04050100 Vermin Tanto Black Knife with Kydex Sheath
Diamondback SG02050008 Southern Grind BadMonkey Emerson Tanto Knife
Diamondback DB15 OBSIDIAN 300 BLK 30+1 10.5 Chrome-Moly OG Green Cerakote
Diamondback DB15 OBSIDIAN 300 BLK 30+1 10.5 Chrome-Moly Flat Dark Earth Cerakote
Diamondback DB15 OBSIDIAN 300 BLK 30+1 10.5 Chrome-Moly Black Anodized Hardcoat
Diamondback DB15 Pistol 338 ARC 10.5in. BLK w/Radian Upgrades 26rd.
Diamondback DB191BB001 Carbon DB15 Pistol 300 AAC Blackout 8" Diamondback Black Semi-Auto Pistol
Diamondback DB0780S993 357 Magnum 6Rd Two Tone Revolver
Diamondback DB0780S991 357 Mag 38 Spl 2in Black Revolver
Diamondback DB15 DB15 5.56 NATO 6 M-LOK Rail/ SBA3 Brace 30+1 7 Chrome-Moly OD Green
Diamondback DB175BK001 5.56 10Rd 16in Rail Black
Diamondback DB075AS703 Revolver 357 Mag/38 Special 3" Stainless Steel
Diamondback DB1718B042 DB15 300BLK 16" 30+1 Burnt Bronze Magpul Stock
Diamondback DB1718B002 DB15 300AAC 30+1 16" Black Magpul MOE Stock
DiamondBack DB1718T002 DB15 350 Legend 5+1 16" Black Magpul MOE Stock
Diamondback DB1720H002 Rifle 5.56 NATO 30+1 Black Magpul MOE Stock
Diamondback DB1718K061 DB15 Carbon Series 5.56 NATO 30+1 16" Black...
DiamondBack DB1718K001 DB15 5.56 NATO 30+1 Black Cerakote 16" Rifle
Diamondback DB075AS701 SDR Exclusive Grip 357 Mag/38 Special +P 6 Shot...
Diamondback DB1784V001 5.56 NATO 16" M-LOK Semi-Auto Black 30rd
Diamondback DB1784K791 DB15 Obsidian 5.56 NATO 30+1 16" Black Nitride...
Diamondback DB1023C001 DB10 308 Win 20rd Black Hard Coat Anodized...
Diamondback Firearms DB15 Semi-Automatic Rifle 223 Wylde
DIAMONDBACK DB15 5.56mm NATO 16in 30rd Brown/FDE Semi-Auto Rifle (1784K131)
Diamondback Birdshead Sidekick Double/Single Action Revolver
Diamondback Sidekick Double/Single Action Revolver .22 LR/ WMR
Diamondback Sidekick 22LR/22Mag 9Rd 5.5" Barrel Black Cerakote Convertible Revolver
Diamondback DB15 5.56 NATO 16" Barrel 30+1 OD Green with M-Lok Handguard & Magpul Accessories
Diamondback DB1784K061 DB15 5.56x45mm NATO 30+1 16" FDE 15" M-Lok...
Diamondback DB15 Rifle 5.56 NATO 16in Barrel M-Lok Handguard Magpul Stock
Diamondback DB1790K005 5.56 NATO 16" Barrel 15" M-Lok Rail Black 10-Rd
Diamondback Sidekick Double/Single Action Revolver .22LR/.22 Magnum
Diamondback DB0200P251 DB9 Striker Fired 9mm Semi-Auto Pistol, 3.00" Barrel, 6+1 Capacity, Black Finish
Diamondback Sidekick Revolver .22LR/.22WMR 5.5in Barrel 9 Shot Silver/Black
DIAMONDBACK DB15 300 Blackout 10in 28rd Black Semi-Auto Pistol (DB1915B001)
Diamondback DB171AK201 AR-15 Rifle, 5.56 NATO, 16" Barrel, OD Green, 30 Rd
DIAMONDBACK DB15 223 Rem/556NATO 16in 30rd Smoked Bronze Rifle (DB171AK211)
DIAMONDBACK DB15 350 Leg 16in 10rd/15rd Black Semi-Auto Rifle (DB1731T001)
Diamondback DB15 5.56 NATO 16" Black AR-15 Rifle
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 DBAM29 Sub-Compact 9mm Pistol, 3.5" Barrel, Poly
DIAMONDBACK DB10 8.6 Blackout 16in 20rd Black Semi-Auto Rifl
Diamondback Sidekick Double/Single Action Revolver .22LR/.22
Diamondback DBAM29MAG10R 9mm Luger 12 Round Stainless Steel
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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