Primary Weapon Systems MK114 MOD 1-M .223 Wylde Complete Upper Receiver - 14.5"

Manufactured by Primary Weapon Systems
SKU: MK1-M1U-223-14-NC
MPN: MK1-M1U-223-14-NC
Manufactured by Primary Weapon Systems
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$1,129.95

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Details

Details

The Primary Weapon Systems MK114 MOD 1-M Complete Upper Receiver is built around a long-stroke piston system to support smooth operation and consistent performance. Chambered in .223 Wylde, this upper features a 14.5" 41V50 barrel with a 1:8 twist and 1/2x28 threading, paired with a 13.5" M-LOK handguard that offers ample mounting space while keeping weight balanced. A three-position adjustable gas block allows tuning for different shooting setups, including suppressed use. The long-stroke piston system helps manage heat and fouling away from the receiver. A Radian Raptor LT charging handle is included, and the upper ships ready for installation of a muzzle device or suppressor mount. Total weight is approximately 4 lb 4 oz as configured.

Features:

  • Chambered in .223 Wylde
  • 14.5" 41V50 barrel with 1:8 twist
  • Threaded 1/2x28 muzzle
  • Long-stroke piston operating system
  • Three-position adjustable gas block
  • 13.5" M-LOK handguard
  • Radian Raptor LT charging handle
  • Fits mil-spec AR-15 lower receivers
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Specifications

Barrel Length14.5
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandPrimary Weapons Systems
Caliber Gauge.223 Wylde
ColorBlack
Gas System LengthMid-Length
Gas System TypeLong Stroke Gas Piston
Handguard13.5 in Freefloat Rail
Muzzle DeviceThread Protector
PlatformAR-15
Thread Pattern1/2 X 28
Twist Rate1:8
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

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