16" .300 Blackout AR-15 Barrel – Versatile Power for Suppressed and Long-Range Precision
The 16-inch .300 Blackout AR-15 barrel is designed for versatility, offering excellent performance for both suppressed and unsuppressed shooting. Featuring a carbine-length gas system and a 0.750" gas block journal, this barrel ensures reliable cycling, even with subsonic or supersonic ammunition. The 1:8 twist rate is optimized for stabilizing a wide range of bullet weights, making it suitable for a variety of shooting applications. Made from durable 4150 CMV steel or 416R stainless steel and finished with QPQ nitride or parkerized coatings, it offers enhanced corrosion resistance and longevity. Threaded 5/8x24, it is compatible with standard .30 caliber muzzle devices or suppressors, ideal for reducing recoil and muzzle flash. The barrel also features M4 feed ramps for reliable feeding of .300 Blackout cartridges. Weighing between 22–24 oz depending on the profile and material, it is an excellent choice for AR-15 builds intended for hunting, tactical use, or recreational shooting.
Specifications:
- Manufacturer: Gorilla Machining
- Chamber: .300 Black Out 7.62x35
- Contour: H-bar
- Fluted: No
- Length: 16"
- Twist Rate: 1:8
- Gas System: Pistol Length
- Diameter at Gas Port: .750
- Thread Pitch: 5/8x24
- Feed Ramps: M4
- Material: 4150 CMVS
- Finish: Parkarize
- Process: Button Rifled
- Lining: Parkerize
- Extension: M4
- Assembly: Stripped
Gorilla Machining AR-15 16" .300 Black Out 1/8 Twist Barrel Pistol Gas System Mag Phosphate
When it comes to AR-15 customization, precision, and performance, few components matter as much as the barrel. Among the most sought-after upgrades is the Gorilla Machining AR-15 16" .300 Black Out 1/8 Twist Barrel Pistol Gas System Mag Phosphate. Built for shooters who demand accuracy, durability, and compatibility, this barrel is engineered to take your AR-15 to the next level.
Whether you’re building an AR-15 from scratch or upgrading an existing rifle, understanding the unique features of this barrel will help you make an informed choice. In this article, we’ll cover everything you need to know, including specifications, advantages, use cases, and why Gorilla Machining is a trusted name in AR parts.
Key Features of the Gorilla Machining AR-15 16" .300 Black Out Barrel
Let’s break down the specifications of this barrel and why they matter for shooters:
1. Caliber: .300 Blackout
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Designed specifically for the versatile .300 AAC Blackout cartridge.
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Supports both subsonic and supersonic loads, making it excellent for suppressed or unsuppressed shooting.
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Popular for home defense, hunting, and tactical use.
2. Length: 16 Inches
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The 16-inch length is a standard legal rifle length under U.S. federal law.
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Balances accuracy and maneuverability, making it suitable for both close-quarters and medium-range shooting.
3. Twist Rate: 1/8
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The 1:8 twist rate is optimized for stabilizing a wide range of bullet weights, including heavier subsonic rounds (200+ grains) and lighter supersonic loads.
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Provides excellent accuracy across multiple bullet types.
4. Gas System: Pistol Length
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A pistol-length gas system ensures reliable cycling of .300 Blackout, particularly with subsonic ammunition.
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Enhances performance when shooting suppressed.
5. Finish: Mag Phosphate
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Finished with a Manganese Phosphate coating, known for its durability and corrosion resistance.
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Adds a matte, non-reflective surface that resists wear and tear.
Together, these features make the Gorilla Machining AR-15 16" .300 Black Out 1/8 Twist Barrel Pistol Gas System Mag Phosphate one of the most versatile and dependable barrels on the market.
Why Choose .300 Blackout for AR-15 Builds?
The .300 Blackout (AAC) cartridge has grown in popularity due to its flexibility and power. Compared to 5.56 NATO, it offers:
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Better Suppressed Performance: Subsonic .300 Blackout paired with a suppressor provides ultra-quiet shooting.
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Superior Energy Transfer: Excellent stopping power for home defense or hunting medium game.
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Magazine Compatibility: Works with standard AR-15 magazines and bolts.
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Compact Use: Performs well in shorter barrels, making it ideal for pistols and carbines.
By choosing the Gorilla Machining 16" barrel chambered in .300 Blackout, you’re equipping your AR with a system that can handle diverse shooting applications.
Advantages of the Gorilla Machining 16" .300 Blackout Barrel
1. Versatility
This barrel can handle a wide range of shooting scenarios—defense, hunting, tactical, and recreational.
2. Reliability
The pistol-length gas system ensures dependable cycling with both subsonic and supersonic ammo, even in suppressed configurations.
3. Durability
The Mag Phosphate finish protects against moisture, abrasion, and harsh field conditions.
4. Accuracy
The 1/8 twist rate stabilizes bullet weights from 110 to 220 grains, offering superior accuracy across ammo types.
5. Compliance
At 16 inches, this barrel ensures legal rifle length without the need for NFA registration.
Gorilla Machining: A Trusted Name in AR-15 Parts
Why choose Gorilla Machining? The company has established itself as a leader in manufacturing high-quality AR-15 and AR-10 parts.
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Precision Engineering: Every component is designed with exacting tolerances.
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Wide Selection: Barrels, uppers, lowers, and accessories for multiple calibers.
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Made for Builders: Gorilla Machining supports hobbyists, competitive shooters, and professionals alike.
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Proven Performance: Their products are tested and trusted by firearm enthusiasts across the country.
When you invest in the Gorilla Machining AR-15 16" .300 Blackout barrel, you’re choosing a part backed by a company known for quality.
Ideal Applications for the Gorilla Machining .300 Blackout Barrel
1. Home Defense
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Subsonic .300 BLK with a suppressor offers quiet yet powerful defense.
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Compact enough for maneuvering indoors, while still providing energy transfer.
2. Hunting
3. Tactical Use
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Reliable in short or mid-range engagements.
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Compatible with optics, suppressors, and tactical setups.
4. Range Shooting
Installation Considerations
If you’re planning to install the Gorilla Machining AR-15 16" .300 Black Out 1/8 Twist Barrel Pistol Gas System Mag Phosphate, here’s what you’ll need to know:
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Gas Block and Tube: Ensure compatibility with a pistol-length gas system.
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Barrel Nut: Proper torque is essential for safe operation.
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Headspace Check: Always confirm correct headspace when installing a new barrel.
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Handguard Fit: Choose a handguard that complements a 16-inch barrel setup.
Many builders choose to pair this barrel with Gorilla Machining uppers for maximum compatibility and performance.
Care and Maintenance
To extend the life of your Mag Phosphate-finished barrel:
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Clean Regularly: After each range session, remove fouling and carbon buildup.
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Lubricate: Apply light oil to prevent corrosion.
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Avoid Overheating: Allow the barrel to cool between extended shooting sessions.
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Inspect: Check for wear, cracks, or damage before use.
With proper care, this barrel will provide thousands of rounds of reliable performance.
Comparing the Gorilla Machining Barrel to Alternatives
When searching for AR-15 barrels in .300 Blackout, Gorilla Machining stands out due to its:
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Affordability: Premium performance without premium prices.
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Compatibility: Designed to fit AR-15 platforms with minimal modifications.
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Performance: Balanced twist rate, gas system, and length make it one of the most versatile barrels available.
Other brands may offer similar specs, but Gorilla Machining provides a competitive edge in pricing and reliability.
Why the Mag Phosphate Finish Matters
The Manganese Phosphate finish isn’t just cosmetic—it’s functional:
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Corrosion Resistance: Protects steel from moisture damage.
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Durability: Handles the heat and friction of sustained fire.
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Tactical Advantage: Matte finish reduces glare for stealth operations.
This makes it especially valuable for field use in challenging environments.
Final Thoughts: Gorilla Machining AR-15 16" .300 Black Out Barrel
The Gorilla Machining AR-15 16" .300 Black Out 1/8 Twist Barrel Pistol Gas System Mag Phosphate is the perfect choice for builders and shooters seeking accuracy, reliability, and versatility. With its optimized twist rate, durable phosphate finish, and reliable pistol-length gas system, this barrel is built to perform in home defense, hunting, tactical, and recreational scenarios.
If you’re looking to upgrade your AR-15 with a barrel that balances performance, durability, and affordability, Gorilla Machining delivers exactly what you need.
