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Ar-15 Modern Series Barrels .300 Blackout - Ar-15 Pistol Length 16 Barrel .300 Blackout
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$171.99
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SKU: 915000053
Overview
Built for compact .300 Blackout setups, this 6-inch Modern Series barrel is intended for pistol configuration firearms and other compliant NFA/ATF applications. It is machined from 4150 Chrome Moly Vanadium steel and finished with QPQ corrosion-resistant treatment, with a QPQ coated M4 feed ramp extension. The .750" gas block journal and 1:7 twist rate provide the key compatibility details needed when planning a short-barrel build. This is a purpose-driven option for hunters and shooters assembling a compact rifle platform where legal configuration and component fitment matter.
Why Hunters Choose the Ballistic Advantage
.300 Blackout
Chambering for compatible pistol or
6-inch Modern
Series barrel from Ballistic Advantage
4150 Chrome
Moly Vanadium steel construction
Qpq Corrosion
Resistant finish
Qpq Coated
M4 feed ramp extension
Key Features
- .300 Blackout chambered Modern Series barrel
- 6-inch barrel length
- Machined from 4150 Chrome Moly Vanadium steel
- QPQ corrosion resistant finish
- QPQ coated M4 feed ramp extension
- .750-inch gas block journal
- 1:7-inch twist rate
Best Used For
- Hunters building a .300 Blackout pistol configuration firearm within NFA/ATF rules
- Shooters needing a 6-inch Modern Series barrel for a compact AR-15 setup
- Users who want a barrel with a .750-inch gas block journal and 1:7 twist rate
- Ballistic Advantage customers matching a Modern Series barrel to an existing .300 Blackout build
Specifications
| Barrel Length | 6 inch |
|---|---|
| Blade Finish | QPQ Corrosion Resistant |
| Caliber | 300 Blackout |
| Feed Ramp Extension | QPQ coated M4 |
| Gas Block Journal | .750" |
| Material | 4150 Chrome Moly Vanadium |
| Nfaatf Notice | All NFA/ATF Rules Apply |
| Twist Rate | 1:7 inches |
Pros
- .300 Blackout chambering for compatible pistol or registered NFA configurations.
- 6-inch Modern Series barrel from Ballistic Advantage.
- 4150 Chrome Moly Vanadium steel construction.
- QPQ corrosion resistant finish.
- QPQ coated M4 feed ramp extension.
- .750-inch gas block journal and 1:7 twist rate.
Considerations & Trade-offs
- This barrel is chambered in .300 Blackout and specified as a 6 inch Modern Series barrel, so it is a compact option rather than a general-purpose length.
- The product includes explicit NFA/ATF restrictions; possession and use depend on the receiver configuration, so compatibility must be verified before purchase.
- The .750" gas block journal and 1:7 twist rate are fixed specifications, which narrows setup choices for builds that require different dimensions.
- The QPQ finish and coated M4 feed ramp extension are part of the listed configuration, but the product data does not provide performance claims beyond those features.
Suggested Comparisons
- AR-15 barrels
- .300 Blackout barrels
- Pistol-length barrel assemblies
- AR-15 upper components
Suggested Accessories
- Gas block
- Barrel nut
- Handguard
- Upper receiver
Frequently Asked Questions
What caliber is this barrel chambered for?
It is chambered in .300 Blackout.
What is the barrel length?
The product description identifies it as a 6 inch barrel.
What material is the barrel made from?
It is machined from 4150 Chrome Moly Vanadium steel.
What finish does this barrel have?
It features a QPQ Corrosion Resistant Finish, and the M4 feed ramp extension is also QPQ coated.
What gas block journal and twist rate are listed?
The listed gas block journal is .750" and the twist rate is 1:7 inches.