The Primary Weapons Systems MK216 Upper 16.1" 308 Win Black is a complete upper receiver built for shooters who want a refined AR10/SR25-compatible top end. Featuring a 16.1 inch barrel chambered in 308 Winchester and capped with the effective FRC Comp muzzle device, this upper is designed to deliver smooth recoil characteristics and consistent accuracy in a slim, modern profile.

This MK216 upper is well suited for range work, training, and general-purpose use where a reliable 308 Winchester gas gun is desired. Its extended handguard and full-length top rail provide ample space for optics and accessories, allowing you to configure the rifle to your specific needs. Backed by Primary Weapons Systems’ reputation for innovative gas systems and meticulous machining, the MK216 upper is a strong foundation for a capable large-frame AR build.

Key Features:

• Manufacturer: Primary Weapons Systems
• Model: MK216
• Caliber: 308 Winchester
• Barrel Length: 16.1"
• Product Type: Upper Receiver
• Compatible Firearms: AR10/SR25
• Muzzle Device: FRC Comp
• Color: Black