Primary Weapons Systems MK116 MOD 2-M 7.62x39 Upper

Primary Weapons Systems MK116 MOD 2-M Upper Receiver

The MK116 MOD 2-M represents Primary Weapons Systems' commitment to precision engineering and practical design. This upper receiver assembly delivers the reliability of a long-stroke piston system in a modern, compact package.

Key Features

Piston System & Reliability

• Long-stroke piston operation reduces carrier tilt and extends component life
• Proven design philosophy prioritizing durability over conventional direct impingement

Construction & Finish

• Fully forged upper receiver for strength and longevity
• Anodized black finish resists corrosion and wear
• 16.1" barrel optimizes velocity and handling in 7.62x39

Ergonomic Design

• Free-floating M-LOK handguard for precision and accessory mounting flexibility
• Radian Raptor charging handle provides smooth, reliable operation
• Triad30 muzzle device manages recoil and flash
• Flared magazine well improves reload speed and reliability
• Integrated trigger guard protects against accidental discharge
• No forward assist—streamlined design reduces unnecessary complexity

Compatibility

This upper receiver assembly fits standard AR-15 lower receivers, making it an excellent upgrade path for existing platforms or the foundation for a new build.

The MK116 Advantage

Compact, efficient, and built to exacting standards, the MK116 MOD 2-M delivers performance without compromise. Whether you're building a dedicated 7.62x39 rifle or upgrading an existing system, this upper receiver provides the reliability and ergonomics serious shooters demand.