11.5″ 5.56 mm Barrel

- Available in 11.5″
- 5.56 mm
- 4150 Chrome Molly Vanadium
- Threaded Barrel — Thread Pitch 1/2 x 28
- Gas Block Diameter .750
- Gas Tube Length — Carbine
- 1-9 RH Barrel Twist
- 6 Lands and Groves
- M4 Feed Ramp
- Government profile
- Button Broached

This .300 Blackout chambered 8 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

All NFA/ATF Rules Apply
You may use this barrel with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when installed on a Pistol configuration firearm.

Additional Info
Length" 8"
Material: 4150 Chrome Moly Vanadium
Profile: DRP
Finish: QPQ Corrosion Resistant
Gas System Length: Pistol
Gas Block Journal: .750"
Twist Rate: 1:7 inches
Muzzle 5/8x24 Threaded
Weight: 19oz

This .300 Blackout chambered 9 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

All NFA/ATF Rules Apply You may use this barrel with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when installed on a Pistol configuration firearm.

Additional Info
Length: 9"
Materia: 4150 Chrome Moly Vanadium
Profile: DRP Finish QPQ Corrosion Resistant
Gas System Length: Pistol
Gas Block Journal: .750"
Twist Rate: 1:7 inches
Muzzle: 5/8x24 Threaded
Weight: 21oz

This 5.56 chambered 10.5 inch Government Profile Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

All NFA/ATF Rules Apply
You may use this barrel with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when installed on a Pistol configuration firearm.

Additional Info
Length: 10.5"
Material: 4150 Chrome Moly Vanadium
Profile: Government
Finish: QPQ Corrosion Resistant
Gas System Length: Carbine
Gas Block Journal: .750"
Twist Rate: 1:7 inches
Muzzle: 1/2x28 Threaded
Weight: 19 oz

This 5.56 chambered 12.5 inch Government Profile Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

All NFA/ATF Rules Apply
You may use this barrel with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when installed on a Pistol configuration firearm.

Additional Info
Length: 12.5"
Material: 4150 Chrome Moly Vanadium
Profile: Government
Finish: QPQ Corrosion Resistant
Gas System Length: Carbine
Gas Block Journal: .750"
Twist Rate: 1:7 inches
Muzzle: 1/2x28 Threaded
Weight: 22 oz

Our 5.56 chambered 14.5 inch Government Profile Mid-Length Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

All NFA/ATF Rules Apply

You may use this barrel with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when permanently attaching a muzzle device extending the length to 16 inches.

Additional Info
Length: 14.5"
Material: 4150 Chrome Moly Vanadium
Profile: Government
Finish: QPQ Corrosion Resistant
Gas System Length: Mid-Length
Gas Block Journal: .750"
Twist: Rate 1:7 inches
Muzzle: 1/2x28 Threaded
Weight: 25 oz

Our 5.56 chambered 16 inch M4 Profile Carbine Length Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

Additional Info
Length: 16"
Material: 4150 Chrome Moly Vanadium
Profile: M4
Finish: QPQ Corrosion Resistant
Gas System Length: Carbine
Gas Block Journal: .750"
Twist Rate: 1:7 inches
Muzzle: 1/2x28 Threaded
Weight: 28 oz

Our 5.56 chambered 16 inch Government Profile Mid-Length Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

Additional Info
Length: 16"
Material: 4150 Chrome Moly Vanadium
Profile: Government
Finish: QPQ Corrosion Resistant
Gas System Length: Mid-Length
Gas Block Journal: .750" Twist Rate 1:7 inches
Muzzle: 1/2x28 Threaded
Weight: 28 oz

This 5.56 chambered 18 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

This barrel features a longer .750” profile dimension necessary for proper installation of the OPS Inc 12th model collar and suppressor.

Additional Info
Length: 18"
Material: 4150 Chrome Moly Vanadium
Profile: SPR
Finish: QPQ Corrosion Resistant
Gas System Length: Rifle
Gas Block Journal: .750"
Twist Rate: 1:7 inches
Muzzle: 1/2x28 Threaded
Weight: 41 oz

This .223 Wylde chambered 16 inch barrel is machined from 416 Stainless Steel with a bead blasted finish. Our Premium Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.

This barrel features a Mk12 Mod H profile with a longer .750” profile dimension necessary for proper installation of the OPS Inc 12th model collar and suppressor.

Additional Info
Length: 16"
Material: 416R Stainless Steel
Profile: Tactical Government
Finish: Bead Blasted
Gas System Length: Mid-Length
Gas Block Journal: .750"
Twist Rate: 1:8 inches
Muzzle: 1/2x28 Threaded
Weight: 32oz
Other Info: HP and MPI Tested

This .223 Wylde chambered 16 inch barrel is machined from 416R Stainless Steel with a bead blasted finish. Our Premium Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.

Hanson Series Barrels feature our proprietary BA Hanson profile and include a pinned lo-pro gas block. Hanson barrels are not designed to work with aftermarket piston kits.

Additional Info
Length: 16"
Material: 416R Stainless Steel
Profile: Hanson
Finish: Bead Blasted
Gas System Length: Mid-Length
Gas Block Journal: 1.03" Gas Block Seat for .750" Low Profile Gas Blocks Only
Twist Rate: 1:8 inches
Muzzle: 1/2x28 Threaded
Weight: 27
Other Info: HP and MPI Tested

This 5.56 chambered 16 inch Performance Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish. Our Performance Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.

Hanson Series Barrels feature our proprietary BA Hanson profile and include a pinned lo-pro gas block. Hanson barrels are not designed to work with aftermarket piston kits.

Additional Info
Length: 16"
Material: 4150 Chrome Moly Vanadium
Profile: Hanson
Finish: QPQ Corrosion Resistant
Gas System Length: Mid-Length
Gas Block Journal: 1.03" Gas Block Seat for .750" Low Profile Gas Blocks Only
Twist Rate: 1:7 inches
Muzzle: 1/2x28 Threaded
Weight: 27oz
Other Info: HP and MPI Tested

This 5.56 chambered 16 inch Performance Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish. Our Performance Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.

Hanson Series Barrels feature our proprietary BA Hanson profile and include a pinned lo-pro gas block. Hanson barrels are not designed to work with aftermarket piston kits.

“The original BA Hanson profile barrels have a .750” diameter at the gas block journal and it is more of a light/medium contour. The BA Hanson .625” barrels are called this due to .625″ diameter at the gas block journal. This profile is a thinner and lighter weight version of the original BA Hanson profile. Each BA Hanson barrel comes with a pinned, lo-pro Gas Block already installed which makes them an excellent value.”

Additional Info
Length: 16"
Material: 4150 Chrome Moly Vanadium
Profile: Hanson
Finish: QPQ Corrosion Resistant
Gas System Length: Mid-Length
Gas Block Journal: 1.00" Gas Block Seat for .625" Low Profile Gas Blocks Only
Twist Rate: 1:7 inches
Muzzle: 1/2x28 Threaded
Weight: 22 Oz
Other Info: HP and MPI Tested

This .223 Wylde chambered 18 inch barrel is machined from 416 Stainless Steel with a bead blasted finish. Our Premium Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.

Hanson Series Barrels feature our proprietary BA Hanson profile and include a pinned lo-pro gas block. Hanson barrels are not designed to work with aftermarket piston kits.

Additional Info
Length: 18"
Material: 416R Stainless Steel
Profile: Hanson
Finish: Bead Blasted
Gas System Length: Mid-Length
Gas Block Journal: 1.03" Gas Block Seat for .750" Low Profile Gas Blocks Only
Twist Rate: 1:8 inches
Muzzle: 1/2x28 Threaded
Weight: 40 oz
Other Info: HP and MPI Tested

This .223 Wylde chambered 18 inch barrel is machined from 416 Stainless Steel with a bead blasted finish. Our Premium Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.

Featuring functionally aggressive flutes and crisp, clean lines, BA Fluted barrels deliver the perfect balance of weight and rigidity. Utilizing six and eight flute designs we’ve achieved weight reduction up to and exceeding 16 ounces. Confidently lighten your kit without sacrificing an ounce of accuracy.

Additional Info
Length: 18"
Material: 416R Stainless Steel
Profile: SPR
Finish: Bead Blasted
Gas System Length: Rifle
Gas Block Journal: .750"
Twist Rate: 1:8 inches
Muzzle: 1/2x28 Threaded
Weight: 32.02 oz
Other Info: HP and MPI Tested