The MK1 MOD 1-M line is built for performance, featuring the highly regarded PWS long stroke piston system, which delivers exceptional reliability and function. This proven system is trusted by PWS owners and continues to be a top choice for those who demand consistent, high-level performance. The rifle is equipped with a free-float M-LOK handguard and forward assist controls, providing flexibility and ease of use, while maintaining a true mil-spec design that appeals to both civilian shooters and law enforcement professionals. Constructed with fully forged upper and lower receivers, the MK1 MOD 1-M is a rugged, no-nonsense rifle designed to withstand the toughest conditions. It is a versatile, high-value option that combines reliability with superior craftsmanship, ensuring it can handle any challenge thrown its way. Whether you're in a tactical environment or on the range, the MK1 MOD 1-M is built to be relentless and unstoppable, making it the ideal tool for those who demand top-tier performance without compromise.

The 9-3/4 inches .300 Blackout barrel is optimized for ammunition for excellent performance and reliability
The barrel twist rate is 1:8, designed for optimal stability and accuracy with a wide range of bullet weights
Muzzle velocity 2264 fps, providing high-speed rounds for better performance over distance
PWS Triad 30 muzzle device, optimized for minimizing recoil and flash for improved accuracy and comfort
PWS proprietary piston upper, T6 7075 forged, anodized, ensuring reliability and durability with a high-quality piston-driven operating system
PWS M-LOK 6.9 inches handguard, offering a compact and durable solution for attaching accessories with an M-LOK system
Radian Raptor ambidextrous charging handle, allowing for smooth, efficient operation from either side of the rifle

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Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Local Law Compliance

Certain firearm parts and accessories, including AR-style upper receivers, are subject to complex and frequently changing federal, state, and local laws and regulations. While an upper receiver may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using an upper receiver in certain states (e.g., California, Washington State) and localities depends on how it is assembled, combined with other components, and ultimately used. You are solely responsible for ensuring that any assembly, configuration, possession, or use complies with all federal, state, and local laws, including any so-called “assault weapon” bans and short-barreled rifle restrictions. We do not provide legal advice and are not responsible for unlawful configurations or uses.