Key Features

• Ideal Pin-and-Weld Length: The 13.7-inch barrel provides a highly compact operational profile while allowing builders to pin and weld extended muzzle devices to achieve a non-NFA legal 16-inch rifle length.
• Melonite/Nitride Barrel Protection: The heavy-duty 4150 CMV steel barrel is fully treated with an advanced Salt Bath Melonite finish inside the bore and across the exterior to extend operational service life and maximize corrosion resistance.
• Premium Mid-Length Gas Dwell: Precision-tuned gas dynamics deliver an optimized pressure curve over the 13.7-inch barrel, yielding a significantly softer recoil impulse and reduced internal system wear.
• Optimum 1:7 Twist Rate: Precision button-rifled with a fast 1:7 twist configuration engineered to perfectly stabilize standard 55gr military surplus rounds up to heavy-grain 77gr match ammunition.
• Slim Profile Free-Float M-LOK Rail: Machined from high-strength aluminum, the lightweight handguard isolates barrel vibrations to preserve uniform mechanical accuracy while providing a continuous top rail and extensive M-LOK modular spacing.
• Forged M4 Feed Ramp Upper Receiver: Precision machined from 7075-T6 forged aluminum and finished with a Type III hardcoat anodizing, featuring cut M4 feed ramps for completely fluid, reliable cartridge feeding.