Green Mountain 5.56 AR-15 Barrel 16" M4 Phosphate - GM-M8
$182.95
Out of stock
Upgrade your AR-15 build with the reliable Green Mountain 5.56 AR-15 Barrel 16″ M4 Phosphate. Engineered for precision and durability, this carbine-length barrel delivers consistent performance in tactical, training, and recreational applications. Its M4 profile balances weight and heat dissipation, making it an ideal choice for shooters seeking a dependable foundation for their rifle.
Key Features and Benefits
- Chrome-Lined Bore and Chamber: Provides exceptional longevity, corrosion resistance, and simplified maintenance, ensuring reliable function even after thousands of rounds.
- Phosphate Finish: Offers superior protection against rust and wear while maintaining a low-profile, non-reflective appearance perfect for tactical use.
- 1:8 Twist Rate: Optimizes stabilization for a wide range of 5.56 NATO and .223 Remington bullet weights, enhancing accuracy across common ammunition types.
- Carbine Gas System with 0.75″ Journal: Ensures smooth, reliable cycling in a compact 16″ package, reducing recoil and improving overall shootability.
- 1/2×28 Muzzle Threads: Compatible with a variety of muzzle devices, flash hiders, and suppressors for customization options.
Technical Specifications
- Barrel Length: 16 inches
- Profile: M4
- Platform: AR-15
- Cartridge Compatibility: 5.56 NATO
- Gas System: Carbine length
- Gas Block Journal: 0.75 inches
- Twist Rate: 1:8
- Muzzle Thread Pattern: 1/2×28
- Finish: Phosphate with chrome-lined bore and chamber
- Material: 41V50 milspec vanadium steel
- Weight: 31 ounces
Why Choose This Barrel?
Green Mountain barrels are renowned for their mil-spec construction and proven accuracy in demanding environments. The combination of a chrome-lined interior and durable phosphate exterior addresses common shooter concerns like barrel erosion, fouling, and environmental exposure. Whether you’re building a duty-ready carbine or a versatile range rifle, this barrel provides the performance and reliability needed to elevate your setup without unnecessary bulk.
Invest in quality components that deliver consistent results shot after shot. This 16″ M4 barrel is designed to meet the needs of serious AR-15 enthusiasts who value precision engineering and long-term durability.
| Weight | 31 oz |
|---|---|
| Dimensions | 16 in |
| Finish | Phosphate + Chrome Lined |
| Barrel Profile | M4 |
| Cartridge Compatibility | 5.56 NATO |
| Gas Block Journal | 0.75 |
| Barrel Length | 16" |
| Gas System Length | Carbine |
| Platform | AR-15 |
| Twist Rate | 1:8 |
| Muzzle Thread Pattern | 1/2×28 |
| MPN | GM-M8 |
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.
