Pws Mk111 Mod 1-M Upper 338Arc 11.85 Ls Frc
Pws Mk111 Mod 1-M Upper 338Arc 11.85 Ls FrcPrimary Weapons Systems$1,176.10
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Primary Weapons Systems
The Primary Weapons Systems Mk111 Mod 2-M upper receiver in 338 ARC combines the modular versatility PWS is known for with a modern intermediate cartridge built for serious shooters. This 338 ARC upper features an 11.85-inch barrel and comes equipped with PWS's reliable free-float rail system, giving you a capable mid-range setup that handles hunting, tactical use, and precision shooting without unnecessary bulk. Whether you're building a short-range hunting rifle or a compact precision platform, the Mk111 Mod 2-M delivers the accuracy and durability PWS customers expect.
PWS uppers are engineered to Mil-Spec standards and work seamlessly with standard AR-15 compatible lower receivers. The 338 ARC cartridge sits between 223 Remington and 308 Winchester in terms of power and velocity, making it an excellent choice for medium-range hunting and target shooting. The free-float rail isolates the barrel from the receiver to maximize consistency shot-to-shot, and the 11.85-inch configuration keeps your overall package compact while maintaining effective ballistics at practical distances.
This is a quality upper receiver assembly from a manufacturer that knows modern rifle systems inside and out. If you run a mil-spec lower or are planning to complete a new build, the Mk111 Mod 2-M in 338 ARC is a straightforward path to a specialized, accurate rifle.
| Brand | Primary Weapons Systems (PWS) |
| Model | Mk111 Mod 2-M Upper |
| Caliber | 338 ARC |
| Barrel Length | 11.85 inches |
| Rail System | Free-float rail |
| Receiver Type | Upper receiver assembly |
This upper is a standard Mil-Spec AR-15 design and will work with any mil-spec AR-15 compatible lower receiver. Simply ensure your lower is in 338 ARC if you want this upper to function correctly, or pair it with a multi-caliber lower and swap uppers as needed.
Yes. The 338 ARC cartridge is designed for medium-range hunting applications, and the 11.85-inch barrel provides effective velocity for game at practical distances. Pair it with quality ammunition and optics suited to your expected range, and you have a capable hunting setup.
This is an upper receiver assembly. To complete a functional rifle, you'll need a compatible bolt carrier group in 338 ARC, a mil-spec lower receiver, a charging handle, and a fire control group.
Free-floating the barrel isolates it from the upper receiver and handguard, reducing vibration and harmonics that can affect shot placement. This design improves consistency and accuracy across a wider range of loads and conditions.
Primary Weapons Systems
The Primary Weapons Systems Mk111 Mod 2-M upper receiver in 338 ARC combines the modular versatility PWS is known for with a modern intermediate cartridge built for serious shooters. This 338 ARC upper features an 11.85-inch barrel and comes equipped with PWS's reliable free-float rail system, giving you a capable mid-range setup that handles hunting, tactical use, and precision shooting without unnecessary bulk. Whether you're building a short-range hunting rifle or a compact precision platform, the Mk111 Mod 2-M delivers the accuracy and durability PWS customers expect.
PWS uppers are engineered to Mil-Spec standards and work seamlessly with standard AR-15 compatible lower receivers. The 338 ARC cartridge sits between 223 Remington and 308 Winchester in terms of power and velocity, making it an excellent choice for medium-range hunting and target shooting. The free-float rail isolates the barrel from the receiver to maximize consistency shot-to-shot, and the 11.85-inch configuration keeps your overall package compact while maintaining effective ballistics at practical distances.
This is a quality upper receiver assembly from a manufacturer that knows modern rifle systems inside and out. If you run a mil-spec lower or are planning to complete a new build, the Mk111 Mod 2-M in 338 ARC is a straightforward path to a specialized, accurate rifle.
| Brand | Primary Weapons Systems (PWS) |
| Model | Mk111 Mod 2-M Upper |
| Caliber | 338 ARC |
| Barrel Length | 11.85 inches |
| Rail System | Free-float rail |
| Receiver Type | Upper receiver assembly |
This upper is a standard Mil-Spec AR-15 design and will work with any mil-spec AR-15 compatible lower receiver. Simply ensure your lower is in 338 ARC if you want this upper to function correctly, or pair it with a multi-caliber lower and swap uppers as needed.
Yes. The 338 ARC cartridge is designed for medium-range hunting applications, and the 11.85-inch barrel provides effective velocity for game at practical distances. Pair it with quality ammunition and optics suited to your expected range, and you have a capable hunting setup.
This is an upper receiver assembly. To complete a functional rifle, you'll need a compatible bolt carrier group in 338 ARC, a mil-spec lower receiver, a charging handle, and a fire control group.
Free-floating the barrel isolates it from the upper receiver and handguard, reducing vibration and harmonics that can affect shot placement. This design improves consistency and accuracy across a wider range of loads and conditions.
