Primary Weapons MK1 Mod 1-M Upper 223 Wylde 11.85"
Primary Weapons Systems MK1 Mod 1-M upper receiver in 223 Wylde with 11.85" barrel. Black anodized finish. AR-15 compatible.
Fits: AR-15
Primary Weapons Systems MK1 Mod 1-M Upper Receiver
The MK1 Mod 1-M represents Primary Weapons Systems' commitment to precision and reliability in modern rifle design. This upper receiver assembly delivers the performance characteristics serious shooters demand.
Key Features
- Caliber: 223 Wylde chamber for maximum versatility
- Barrel Length: 11.85" for optimal velocity and handling
- Finish: Black anodized for durability and corrosion resistance
- Compatibility: AR-15 platform
- Design: Mod 1-M configuration with proven PWS engineering
What You Get
This is a complete upper receiver assembly ready to mate with your AR-15 lower receiver. The 223 Wylde chamber accepts both 5.56 NATO and 223 Remington ammunition, giving you flexibility at the range or in the field.
The 11.85" barrel strikes an excellent balance between velocity and maneuverability. Whether you're building a compact rifle for home defense, a lightweight hunting platform, or a versatile range gun, this upper delivers.
Primary Weapons Systems has earned respect in the shooting community for attention to detail and consistent quality. This upper reflects that commitment.
