Primary Weapons M114UA01-2F-NC MK114 Mod 1-M Upper 223 Wylde 14.50" Anodized Barrel for AR-15

The Primary Weapons M114UA01-2F-NC MK114 Mod 1-M Upper is a precision-engineered AR-15 upper receiver assembly designed for operators, competitive shooters, and serious builders who demand accuracy and durability in extended-range applications. Chambered in 223 Wylde with a 14.50-inch anodized barrel, this upper delivers the velocity and shot-group consistency required for tactical work and precision rifle competition without sacrificing portability.

The 223 Wylde chamber is the critical specification here—it accepts both 5.56 NATO and 223 Remington ammunition with superior accuracy compared to a standard 5.56 chamber, because the Wylde throat is optimized for the tighter tolerances of 223 Remington rounds while maintaining safe function with military-spec 5.56 loads. The 14.50-inch barrel length positions this upper in the mid-range carbine category, providing sufficient velocity for 223 Wylde ballistics (3,000+ fps with 62-grain match loads) while maintaining a compact profile suitable for vehicle operations, room clearing, or transitioning between barricades. Hard-anodized finish protects against corrosion and wear during field use and repeated cleaning cycles. The upper's 4.9-pound weight keeps overall rifle balance manageable when paired with compatible lower receivers and furniture.

This assembly suits LEOs running precision-duty carbines, military-adjacent competition shooters (3-gun, PRS formats), and civilian operators building mid-range patrol or training rifles. The MK114 Mod 1-M configuration is popular in duty contexts where barrel length, accuracy, and modularity matter equally. Compatibility with standard AR-15 platforms means drop-in integration with any 5.56 NATO or Wylde-compatible lower receiver, making upgrades and customization straightforward for experienced builders.