Primary Weapons MK114 MOD 2-M 223 WYLDE 14.5'' BBL COMPLETE UPPER W/FSC 556 MK1-M2U-223-14-PW

Primary Weapons MK114 MOD 2-M .223 Wylde 14.5" Complete Upper MK1-M2U-223-14-PW Primary Weapons MK114 MOD 2-M .223 Wylde 14.5" Complete Upper w/ FSC 556 MK1-M2U-223-14-PW The Primary Weapons MK114 MOD 2-M (Model MK1-M2U-223-14-PW) is a premium complete upper receiver assembly chambered in .223 Wylde. Featuring a 14.5-inch barrel and the highly regarded FSC 556 muzzle device, this MOD 2-M upper delivers exceptional accuracy, reliability, and performance for serious shooters and professionals. Built with Primary Weapons Systems’ signature long-stroke piston system, the MK114 offers reduced recoil and improved reliability compared to traditional direct impingement systems. .223 Wylde Chamber for Superior Accuracy The MK114 MOD 2-M is chambered in .223 Wylde, a hybrid chambering that combines the best attributes of both 5.56 NATO and .223 Remington. This allows the upper to safely fire both 5.56 NATO and .223 Remington ammunition while providing enhanced accuracy, especially with match-grade .223 Remington loads. The 14.5-inch barrel is optimized for this chamber, delivering excellent velocity and precision in a compact package. 14.5-Inch Barrel with FSC 556 Muzzle Device This complete upper comes with a 14.5-inch barrel paired with the Primary Weapons FSC 556 flash suppressor/compensator. The FSC 556 is pinned and welded to the barrel, bringing the overall length to a legal 16 inches for compliance with federal regulations. The FSC 556 effectively reduces muzzle flash and provides noticeable recoil reduction, making follow-up shots faster and more controlled. Key Features of the Primary Weapons MK114 MOD 2-M Upper Model: MK1-M2U-223-14-PW – Official Primary Weapons part number Caliber: .223 Wylde Barrel Length: 14.5 Inches Muzzle Device: FSC 556 (Pinned & Welded) System: Long-Stroke Piston Benefits: Reduced recoil, Improved reliability, Excellent accuracy Application: Home Defense, Competition, Tactical Use Long-Stroke Piston System Unlike traditional direct impingement AR-15s, the MK114 MOD 2-M utilizes Primary Weapons’ long-stroke piston operating system. This design keeps the action cleaner by preventing carbon fouling from entering the receiver. The result is a more reliable firearm that requires less maintenance, especially during high-volume shooting sessions or in adverse conditions. Specification Details Brand Primary Weapons Systems Product Line MK114 MOD 2-M Model Number MK1-M2U-223-14-PW Caliber .223 Wylde Barrel Length 14.5 Inches Muzzle Device FSC 556 (Pinned & Welded) Operating System Long-Stroke Piston Application Defense, Competition & Tactical Why Choose the Primary Weapons MK114 MOD 2-M? Primary Weapons Systems is renowned for producing some of the most reliable and innovative AR-15 platforms on the market. The MK114 MOD 2-M combines the accuracy benefits of the .223 Wylde chamber with the reduced recoil and cleaner operation of their long-stroke piston system. The addition of the FSC 556 muzzle device further enhances shootability. Whether you’re building a high-performance SBR or looking for a complete upper that offers superior reliability and accuracy, the MK114 MOD 2-M delivers professional-grade performance in a compact, legal configuration. Experience premium performance with the Primary Weapons MK114 MOD 2-M. The Model MK1-M2U-223-14-PW delivers .223 Wylde accuracy, a 14.5-inch barrel with pinned FSC 556, and the reliability of a long-stroke piston system. The End