AR-15 Barrels
The AR-15 barrel is one of the most critical parts of your AR-15 – let AT3 Tactical help you find the right AR-15 barrel for your setup.
Barrels come in a variety of lengths, materials, and designs to serve the specific purpose of your weapon. Learn more about AR-15 barrels in our article: Choosing an AR15 Barrel – 5 Things to Consider
Sort
Filter
Show In-Stock Only?
Price
Sub Category
Brand
- Barrels - Ballistic Advantage (77)
- Barrels - Faxon Firearms (66)
- Barrels - KAK Industry (36)
- Barrels - AT3 Tactical (21)
- Barrels - Odin Works (18)
- Barrels - Bear Creek Arsenal (11)
- Barrels - LBE Unlimited (10)
- Barrels - CMMG (9)
- Barrels - Rosco Manufacturing (8)
- Barrels - Geissele (7)
- Barrels - Anderson Manufacturing (7)
- Barrels - Wilson Combat (5)
- Barrels - Aero Precision (5)
- Barrels - Diamondback Firearms (4)
- Barrels - Stern Defense (2)
- Barrels - Spike's Tactical (2)
- Barrels - Luth-AR (2)
- Barrels -White Label Armory (1)
- Barrels - Patriot Ordnance (1)
- Barrels - Christensen Arms (1)
Caliber
- Barrels - .223/5.56 (141)
- Barrels - .308/AR-10 Parts (37)
- Barrels - 9mm (31)
- Barrels - .300 Blackout (19)
- Barrels - 6.5 Grendel (14)
- Barrels - 6.5 Creedmoor (12)
- Barrels - 7.62x39 (8)
- Barrels - 350 Legend (8)
- Barrels - 6mm ARC (5)
- Barrels - 45 ACP (4)
- Barrels - .358 Winchester (3)
- Barrels - .458 Socom (3)
- Barrels - 22LR (3)
- Barrels - .450 Bushmaster (2)
- Barrels - .243 Winchester (1)
- Barrels - 5.7x28mm (1)
- Barrels - .224 Valkyrie (1)
Color
- Barrels - Black (101)
- Barrels - Stainless (49)
- Barrels - Gray (10)
- Barrels - Blue (1)
- Barrels - Red (1)
List
Grid
-
AT3™
AT3™ 5.56 NATO Government Profile 11.5 Inch AR-15 Barrel
11.5 Inch Government 5.56 NATO Barrel by AT3 Tactical With a sturdy profile and proven construction, this 11.5-inch 5.56 NATO barrel features a carbine-length gas system for smoother recoil. This... -
AT3™
AT3™ 5.56 NATO Medium Profile 7.5 Inch AR-15 Barrel
7.5 Inch Medium 5.56 NATO Barrel by AT3 Tactical With a sturdy profile and proven construction, this 7.5-inch 5.56 NATO barrel features a pistol-length gas system for smoother recoil. This... -
AT3™
AT3™ 9mm Straight Profile 16 Inch AR-15 Barrel
Powerful Pistol Caliber Performance in a Carbine Package Bring the versatility of 9mm to your AR build with this straight profile 16" barrel from AT3™. Crafted from premium 4150 CrMoV... -
AT3™
AT3™ 300 Blackout Medium Profile 14.5 Inch AR-15 Barrel
14.5 Inch .300 Blackout Barrel by AT3 Tactical This 14.5-inch .300 Blackout Barrel makes a great choice for your short, heavy-hitting pistol or SBR AR-15 builds. Made from 4150 CMV... -
AT3™
AT3™ 300 Blackout Medium Profile 6 Inch AR-15 Barrel
6 Inch .300 Blackout Barrel by AT3 Tactical This 6-inch .300 Blackout Barrel makes a great choice for your short, heavy-hitting pistol or SBR AR-15 builds. Made from 4150 CMV... -
AT3™
AT3™ 9mm Straight Profile 11 Inch AR-15 Barrel
Powerful Pistol Caliber Performance in a Compact Package Bring the versatility of 9mm to your AR build with this straight profile 11" barrel from AT3™. Crafted from premium 4150 CrMoV... -
AT3™
AT3™ 5.56 NATO Government Profile 14.5 Inch AR-15 Barrel
14.5 Inch Government 5.56 NATO Barrel by AT3 Tactical With a sturdy profile and proven construction, this 14.5 inch 5.56 NATO barrel features a midlength gas system for smoother recoil.... -
AT3™
AT3™ 9mm Straight Profile 4.5 Inch AR-15 Barrel
Precision Pistol Caliber Performance in a Compact Package Bring the versatility of 9mm to your AR build with this straight profile 4.5" barrel from AT3™. Crafted from premium 4150 CrMoV... -
AT3™
AT3™ 5.56 NATO Pencil Profile 14.5 Inch AR-15 Barrel
14.5 Inch Pencil 5.56 NATO Barrel by AT3 Tactical With a sturdy profile and proven construction, this 14.5 inch 5.56 NATO barrel features a midlength gas system for smoother recoil.... -
AT3™
AT3™ .22LR Pencil Profile 16 Inch AR-15 Barrel
Precision Rimfire Performance in a Carbine Package Bring the versatility of .22LR to your AR build with this Pencil Profile 16" barrel from AT3™. Crafted from premium 4150 CrMoV steel... -
AT3™
AT3™ 5.56 NATO Pencil Profile 13.9 Inch AR-15 Barrel
13.9 Inch Pencil 5.56 NATO Barrel by AT3 Tactical With a sturdy profile and proven construction, this 13.9-inch 5.56 NATO barrel features a midlength gas system for smoother recoil. This... -
AT3™
AT3™ .22LR Tapered Profile 9 Inch AR-15 Barrel
Precision Rimfire Performance in a Compact Package Bring the versatility of .22LR to your AR build with this tapered 9" barrel from AT3™. Crafted from premium 4150 CrMoV steel per... -
AT3™
AT3™ .22LR Tapered Profile 4.5 Inch AR-15 Barrel
Precision Rimfire Performance in a Compact Package Bring the versatility of .22LR to your AR build with this tapered 4.5" barrel from AT3™. Crafted from premium 4150 CrMoV steel... -
AT3™
AT3™ 7.62×39 Medium Profile 16 Inch AR-15 Barrel
16 Inch 7.62x39 Barrel by AT3 Tactical This 16-inch 7.62x39 Barrel makes a great choice for your hybrid AR-15 builds. Made from 4150 CMV steel per Mil-B-11595E, and finished with... -
AT3™
AT3™ 300 Blackout Medium Profile 7.5 Inch AR-15 Barrel
7.5 Inch .300 Blackout Barrel by AT3 Tactical This 7.5-inch .300 Blackout Barrel makes a great choice for your short, heavy-hitting pistol or SBR AR-15 builds. Made from 4150 CMV... -
Aero Precision 13.7″ 5.56 Cold Hammer Forged Barrel w/Dimple – Mid-Length
Precise Performance from Aero's 13.7" CHF 5.56 Barrel This 13.7" cold hammer forged 5.56 barrel provides match-grade accuracy and durability for your AR-15 build. Precision mandrel-formed from 4150 CMV steel,... -
Aero Precision 16.3″ 5.56 Cold Hammer Forged Barrel w/Dimple – Mid-Length
Precision at Distance with Aero's 16.3" CHF 5.56 Barrel This 16.3" cold hammer forged 5.56 barrel provides match-grade accuracy at a distance for your AR-15 build. Precision mandrel-formed from 4150... -
Aero Precision 12.5″ 5.56 Cold Hammer Forged Barrel w/Dimple – Mid-Length
Unwavering Performance from Aero's 12.5" CHF 5.56 Barrel This 12.5" cold hammer forged 5.56 barrel delivers match-grade accuracy and longevity to your AR-15. Precision mandrel-formed from 4150 CMV steel, the... -
Aero Precision 13.9″ 5.56 Chrome Moly Vanadium Barrel – Mid-Length
Optimized Handling from Aero's 13.9" 5.56 Mid-Length Barrel This 13.9" 5.56 mid-length barrel strikes an ideal balance of maneuverability and ballistics for your AR-15 build. Machined from durable 4150 CMV... -
Diamondback Firearms 16 Inch Carbine AR 15 Barrel – 5.56 NATO – 4150 CMV...
Nitride Barrel with 11 Degree Target Crown Low cost and high value components can be hard to come by - luckily, Diamondback Firearms delivers with their barrels. This carbine length... -
AT3™
AT3™ 5.56 NATO Government Profile 16 Inch AR-15 Barrel
16 Inch Government 5.56 NATO Barrel by AT3 Tactical With a sturdy profile and proven construction, this 16 inch 5.56 NATO barrel features a midlength gas system for smoother recoil.... -
Diamondback Firearms 16 Inch Midlength AR 15 Barrel – 5.56 NATO – 4150 CMV...
High Value 5.56 Barrel for the Working American Low cost and high value components can be hard to come by - luckily, Diamondback Firearms delivers with their barrels. This midlength... -
AT3™
AT3™ .300 Blackout Medium Profile 10.5 Inch AR-15 Barrel
10.5 Inch .300 Blackout Barrel by AT3 Tactical This 10.5 Inch .300 Blackout Barrel makes a great choice for your short, heavy-hitting pistol or SBR AR-15 builds. Made from 4150... -
Ballistic Advantage .223 Wylde 16″ AR 15 Barrel – SPR Fluted Mid-Length – Premium...
Features Precision-machined 416R Stainless Steel, Bead Blasted Finish & Functional Aggressive Flutes The Ballistic Advantage .223 Wylde 16″ Barrel – SPR Fluted Mid-Length – Premium Series is designed to confidently...
Other AR-15 Upper Receiver Components:
AR 15 Charging Handles
AR 15 Gas Blocks & Tubes
AR 15 Handguards & Quad Rails
AR-15 Barrels
AR-15 Bolt Carrier Groups
AR-15 Front Grips
AR-15 Upper Receivers and Parts
Muzzle Devices
AR-15 Handguard Accessories