Primary Weapons Systems MK109, MOD 2-M, Upper Receiver, Fits AR-15, 300 Blackout, 9.75" Barrel, 1:8" Twist, PWS Triad Muzzle Device, 8.9" PWS PicLok MLOK Handguard, Anodized Finish, Black, Includes Radian Raptor Ambidextrous Charging Handle MK1-M2U-300BLK-9 MK1M2U300BLK9

PWS MK109 Mod 2-M Upper Receiver | .300 Blackout | 9.75" Barrel | MK1M2U300BLK9 Primary Weapons Systems MK109 Mod 2-M Upper Receiver – .300 Blackout | 9.75" Barrel | Radian Raptor | MK1M2U300BLK9 The Primary Weapons Systems MK109 Mod 2-M Upper Receiver is a premium, complete upper assembly engineered for serious shooters who demand reliability, accuracy, and modern features in a compact .300 Blackout platform. Featuring a 9.75-inch barrel with a 1:8 twist rate, this upper is optimized for both supersonic and subsonic ammunition. Equipped with the innovative PWS Triad muzzle device and an 8.9-inch PWS PicLok M-LOK handguard, the MK109 Mod 2-M offers exceptional modularity and performance. This model also includes a high-quality Radian Raptor ambidextrous charging handle for smooth, reliable operation from either side. Finished in a durable black anodized coating, this upper delivers the refined engineering and quality that Primary Weapons Systems is known for. Key Features of the Primary Weapons Systems MK109 Mod 2-M Upper Receiver .300 Blackout Chambering – Optimized for both supersonic and subsonic loads with excellent terminal ballistics and suppressor performance. 9.75" Barrel with 1:8 Twist – Provides strong velocity and accuracy in a compact package ideal for short-barreled rifle and pistol builds. PWS Triad Muzzle Device – Advanced muzzle device designed to reduce recoil, manage gas, and improve overall shooting experience. 8.9" PWS PicLok M-LOK Handguard – Lightweight and highly modular handguard with integrated Picatinny rail and M-LOK mounting points. Radian Raptor Ambidextrous Charging Handle – Premium ambidextrous charging handle for smooth and reliable operation from either side. Anodized Black Finish – Durable hard coat anodizing provides excellent corrosion resistance and a professional appearance. Why Choose the Primary Weapons Systems MK109 Mod 2-M Upper Receiver? The Primary Weapons Systems MK109 Mod 2-M Upper Receiver is an excellent choice for builders looking to create a compact, high-performance .300 Blackout AR-15. The 9.75-inch barrel offers an ideal balance between maneuverability and ballistic performance, making it perfect for suppressed SBRs, AR pistols, and home defense configurations. The inclusion of the PWS Triad muzzle device enhances recoil control and gas management, while the PicLok handguard provides ample real estate for optics and accessories. The addition of the Radian Raptor ambidextrous charging handle significantly improves ergonomics and ease of use. Primary Weapons Systems has built a strong reputation for producing innovative and reliable AR components, and the MK109 Mod 2-M continues that legacy with its refined design and premium features. Whether you’re building a suppressed .300 Blackout SBR, a compact tactical rifle, or a versatile home defense weapon, this upper delivers the performance, reliability, and craftsmanship serious shooters expect. This upper receiver is an excellent choice for suppressed builds, short-barreled rifles, and compact .300 Blackout platforms. Specifications Manufacturer: Primary Weapons Systems (PWS) Model: MK109 Mod 2-M Model Number: MK1M2U300BLK9 UPC: 811154033192 Caliber: .300 Blackout Barrel Length: 9.75" Twist Rate: 1:8 Handguard: 8.9" PWS PicLok M-LOK Muzzle Device: PWS Triad Charging Handle: Radian Raptor Ambidextrous Finish: Black Anodized Platform: AR-15 Ideal Applications for the PWS MK109 Mod 2-M Upper This upper receiver is ideal for suppressed .300 Blackout builds, short-barreled rifles, AR pistols, and compact tactical platforms. Experience premium performance with the Primary Weapons Systems MK109 Mod 2-M Upper Receiver. A feature-rich .300 Blackout upper featuring a 9.75" barrel, PWS Triad muzzle device, and Radian Raptor charging handle. The End