Green Mountain .223 Wylde AR-15 Barrel 18" M4 416SS Passivated - GM-M35

Engineered for precision and reliability, the Green Mountain .223 Wylde AR-15 Barrel delivers exceptional performance for tactical shooters and builders seeking a versatile 18-inch option. Crafted from premium 416 stainless steel with a passivated finish, this M4-profile barrel combines durability with a balance of weight and strength ideal for a wide range of applications.

Key Features and Benefits

• .223 Wylde Chambering: Optimized to safely and accurately fire both .223 Remington and 5.56 NATO ammunition, providing flexibility without compromising precision.
• M4 Barrel Profile: Delivers a proven contour that enhances handling while maintaining structural integrity under sustained fire.
• 416 Stainless Steel Construction with Passivated Finish: Offers superior corrosion resistance and a sleek, low-maintenance surface that withstands harsh environments.
• Rifle-Length Gas System: Ensures smooth, reliable cycling with reduced recoil for improved shooter comfort and control.
• 1:16 Twist Rate: Stabilizes a broad spectrum of bullet weights, from lightweight varmint loads to heavier match ammunition.
• 1/2×28 Muzzle Threading: Compatible with a wide array of muzzle devices, flash hiders, and suppressors for customization.
• 0.75″ Gas Block Journal: Designed for standard low-profile gas blocks, simplifying installation and upgrades.

Technical Specifications

• Barrel Length: 18 inches
• Platform: AR-15
• Finish: Passivated Stainless
• Cartridge Compatibility: .223 Wylde
• Gas System: Rifle length
• Twist Rate: 1:16
• Muzzle Thread Pattern: 1/2×28
• Gas Block Journal: 0.75 inches
• Weight: 35 ounces

Why Choose This Barrel?

Whether you’re building a dedicated precision rifle or upgrading an existing AR-15, this barrel addresses common pain points such as inconsistent accuracy, excessive recoil, and premature wear. The combination of button rifling, air gauging, and stress relief ensures tight tolerances for consistent shot placement. Its robust construction supports high-volume shooting while the passivated surface resists rust and fouling.

Ideal for competition, tactical training, or recreational use, this Green Mountain barrel provides the accuracy and dependability serious shooters demand.