Green Mountain 5.56 AR-15 Barrel 16" M4 416SS Passivated - GM-M37
$216.95
Only 2 left in stock
Upgrade your AR-15 build with the precision-engineered Green Mountain 5.56 AR-15 Barrel. This 16-inch M4-profile barrel, machined from premium 416 stainless steel and finished with passivation for superior corrosion resistance, delivers reliable performance in demanding tactical and recreational shooting scenarios.
Key Features
- 416 Stainless Steel Construction with Passivated Finish – Offers exceptional durability, reduced fouling, and long-term resistance to rust and wear, ensuring consistent accuracy over thousands of rounds.
- M4 Profile Design – Provides an optimal balance of strength and weight distribution for improved heat dissipation during sustained fire while maintaining maneuverability.
- 1:7 Twist Rate – Stabilizes a wide range of bullet weights, including heavier projectiles, for enhanced accuracy and versatility across various 5.56 NATO and .223 Remington loads.
- Carbine-Length Gas System – Ensures reliable cycling and smooth operation in standard AR-15 configurations.
- 0.75-Inch Gas Block Journal – Compatible with most standard low-profile gas blocks for straightforward installation.
- 1/2×28 Muzzle Thread Pattern – Allows easy attachment of common muzzle devices, flash hiders, and suppressors.
Technical Specifications
- Barrel Length: 16 inches
- Cartridge Compatibility: 5.56 NATO / .223 Remington
- Platform: AR-15
- Twist Rate: 1:7
- Gas System: Carbine
- Gas Block Journal: 0.75 inches
- Muzzle Threads: 1/2×28
- Finish: Passivated Stainless Steel
- Weight: 31.4 ounces
Why Choose This Barrel for Your AR-15
Whether you’re building a reliable home-defense rifle or a precision competition setup, this Green Mountain barrel addresses common pain points like inconsistent accuracy, excessive wear, and compatibility issues. Its robust construction minimizes barrel whip and maintains point-of-impact stability, while the stainless material simplifies cleaning and maintenance. Install this barrel to achieve professional-grade results without compromising on quality or longevity.
Invest in the Green Mountain 5.56 AR-15 Barrel today and experience the difference in your next range session or tactical application.
| Weight | 31.4 oz |
|---|---|
| Dimensions | 16 in |
| Finish | Stainless |
| 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 | 1:7 |
| Muzzle Thread Pattern | 1/2×28 |
| MPN | GM-M37 |
| UPC | 33765 |
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.
