Special Buy – Primary Weapons Systems MK109 MOD 1-M Upper Receiver

Specifications

Weight—-2.5 ounces

Material—-Forged T6 7075 anodized

WARNING: This product can expose you to chemicals including arsenic, which is known to the State ofCalifornia to cause cancer. For more information, go toWWW.P65WARNINGS.CA.GOV

Product Overview

The Primary Weapons Systems MK109 MOD 1-M upper receiver is a long-stroke piston AR-15 upper built around a 9.75in 300 Blackout barrel with a 1:8 twist. It pairs PWS’s free-float 6.9in MLOK handguard with a Triad 30 muzzle device and a Radian Raptor ambidextrous charging handle for a compact, control-friendly configuration.

Key Features

• PWS long-stroke piston system designed for reliable function and consistent cycling
• 9.75in 300 Blackout barrel with 1:8 twist for common subsonic and supersonic loads
• Free-float 6.9in MLOK handguard for improved mounting options and consistent barrel harmonics
• PWS Triad 30 muzzle device for effective muzzle performance tuning
• T6 7075 forged, anodized construction for strength and durability
• Includes forward assist controls and a Radian Raptor ambidextrous charging handle

A purpose-built 300 Blackout piston upper for dependable use with an MLOK-ready handguard and a compact barrel profile.