The MK118 MOD 1 Upper delivers unmatched precision and versatility, now chambered in the highly efficient 6MM ARC. Designed to provide flat trajectories, reduced recoil, and exceptional energy retention, this upper is perfect for precision shooters, hunters, and tactical applications. Powered by the PWS Long Stroke Piston System, it ensures reliability and reduced fouling, while the 3-setting Adjustable Gas System allows fine-tuning for optimal performance in diverse conditions, including suppressor use.

Highlighted Features

• Sub-MOA Accuracy Guarantee: Experience Sub-MOA accuracy with high-grade ammo, thanks to our Boise made precision barrels.

• PWS Long Stroke Piston System: Renowned for reliability and reduced fouling, with adjustable gas settings for optimal performance.

• Forward Assist Integration: Essential for reliable chambering of rounds, particularly in adverse conditions, ensuring seamless operation and increased reliability for shooters.

• Suppressor Optimized: Provides enhanced suppressor performance by minimizing back pressure, reducing gas blowback, and optimizing gas flow for a cleaner and more comfortable shooting experience.

• 6mm ARC Chambering: Meticulously designed for outstanding accuracy and reliability, accommodating 6mm Advanced Rifle Cartridge (ARC).

• Fully Forged Receiver: Forged 7075-T651 Aluminum upper receiver for durability and strength designed to mil-spec standards, ensuring compatibility and familiarity for users.

• Free-float MLOK handguard:  Offering improved handling and accessory mounting options.

• 5/8-24 Muzzle Thread: For attaching popular 6mm and 308/762 muzzle devices.

• Radian Raptor™ Ambidextrous Charging Handle: Ensures smooth operation for both left and right-handed shooters.

• The PWS VOW: Our warranty for all PWS products, guaranteeing repair or replacement for any defects or issues, ensuring your complete satisfaction.