Primary Weapons Systems MK116 MOD 1‑M Complete Upper Receiver – 7.62×39, 16.1″, M‑LOK, Black (MK1‑M1U‑762X39‑16)

• Complete upper receiver designed for AR-15 platforms chambered in 7.62x39 caliber
• Features 16.1 inch barrel with mid length gas system for balanced cycling performance
• Utilizes long stroke piston system with adjustable gas regulator for reliability
• Equipped with 15.05 inch MLOK handguard for accessory mounting flexibility
• Constructed from T6 7075 forged upper with anodized finish for durability
• Includes Radian Raptor ambidextrous charging handle for enhanced user operation

The Primary Weapons Systems MK116 MOD 1-M Upper Receiver 762X39 is a complete AR-15 upper receiver designed for rifle builds chambered in 7.62×39. The Primary Weapons Systems MK116 MOD 1-M Upper Receiver 762X39 includes a 16.1 inch barrel and a mid-length gas system configuration.

This upper receiver features a PWS long-stroke piston operating system with a three-position adjustable gas regulator. The Primary Weapons Systems MK116 MOD 1-M Upper Receiver 762X39 includes a 15.05 inch M-LOK handguard and a Triad30 muzzle device. It is constructed from T6 7075 forged aluminum with an anodized black finish and includes a Radian Raptor ambidextrous charging handle. In normal operation, the unit mounts to AR-15 lower receivers and serves as the primary firing assembly. This model fits AR rifle platforms chambered in 7.62×39. The Primary Weapons Systems MK116 MOD 1-M Upper Receiver 762X39 is part of the MOD 1 series and is used for rifle assembly and shooting applications.