Dirty Bird Bakersfield
Out of stock
Description
Engineered for precision and reliability in compact AR-15 builds, the Green Mountain 300 BLK 12.5-inch M4 Profile Barrel delivers exceptional performance for tactical applications and short-barreled configurations. Crafted with a durable Mag Phosphate finish and optimized for the versatile .300 AAC Blackout cartridge, this barrel provides shooters with a balanced option that excels in both supersonic and subsonic loads.
Key Features
- M4 Profile Construction: The classic M4 contour offers a robust balance of weight and strength, ideal for sustained fire without excessive bulk in pistol or SBR setups.
- Phosphate Finish: Mag Phosphate coating enhances corrosion resistance and reduces glare, ensuring long-term durability in demanding environments.
- Optimized Gas System: Pistol-length gas system paired with a 0.75-inch journal provides reliable cycling across a wide range of ammunition types.
- Threaded Muzzle: 5/8×24 threading allows easy attachment of suppressors, brakes, or flash hiders for customized performance.
Technical Specifications
- Caliber: .300 AAC Blackout (300 BLK)
- Length: 12.5 inches
- Twist Rate: 1:7 – stabilizes a broad spectrum of bullet weights for consistent accuracy
- Platform: AR-15
- Barrel Profile: M4
- Finish: Mag Phosphate
- Gas Block Journal: 0.75 inches
- Gas System: Pistol Length
- Weight: 28 oz
Why This Barrel Stands Out
Short-barreled 300 BLK builds demand components that maintain velocity and reliability in compact packages. This Green Mountain barrel addresses common pain points like inconsistent cycling and excessive wear by combining proven materials with precise rifling. The 1:7 twist excels at stabilizing heavy subsonic projectiles, making it a favorite for suppressed shooting where quiet, accurate delivery is essential. Its M4 profile distributes weight evenly for better handling during rapid target acquisition.
Whether building a dedicated home-defense pistol or a lightweight tactical carbine, this barrel integrates seamlessly with standard AR-15 components, delivering professional-grade results without unnecessary complexity.
Ideal Applications
- Compact AR pistol configurations
- Suppressed short-barreled rifle (SBR) builds
- Tactical and competitive short-range shooting
- Versatile loads from 110gr supersonic to 220gr subsonic
Upgrade your AR-15 with a barrel designed for real-world performance and lasting value. Experience the difference a purpose-built 300 BLK barrel makes in your next project.
Additional information
| Weight | 28 oz |
|---|---|
| Dimensions | 12.5 in |
| Finish | Mag Phosphate |
| Barrel Profile | M4 |
| Cartridge Compatibility | 300 BLK |
| Gas Block Journal | 0.75 |
| Barrel Length | 12.5 |
| Gas System Length | Pistol |
| Platform | AR-15 |
| Twist Rate | 1:7 |
| Muzzle Thread Pattern | 5/8×24 |
| MPN | GM-M41 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
