Designed for optimal performance, the Primary Weapons Systems MK114 Mod 1-M Upper Receiver is perfect for AR-15 builds. Chambered in .223 Wylde, this upper receiver features a 14.5" barrel and does not include a muzzle device, allowing for full customization. The anodized black finish ensures durability and a sleek look.
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The MK114 Mod 1-M Upper Receiver utilizes the PWS Long Stroke Piston System with a 3-setting adjustable gas regulator, providing enhanced reliability and reduced maintenance compared to traditional direct impingement systems. Constructed from T6 7075 forged aluminum, the upper receiver is built for strength and durability.
The 14.5" barrel, chambered in .223 Wylde, offers a 1:8 twist rate, optimizing it for a wide range of bullet weights. With a muzzle velocity of 2921 fps, this upper receiver delivers superior performance. The PWS M-Lok 13.624" handguard provides ample space for accessory mounting, combining a slim profile with robust construction. The handguard measures 1.7" in width and 2.25" in height, ensuring a comfortable and ergonomic grip. Additionally, the Radian Raptor Ambidextrous Charging Handle offers ease of use for both right- and left-handed shooters.
Primary Weapons Systems MK114 Mod 1-M Specifications
Brand: Primary Weapons Systems
Model: MK114 Mod 1-M Upper Receiver
Caliber: .223 Wylde
Barrel Length: 14.5"
Gas System Length: Mid-Length
Barrel Twist Rate: 1:8
Muzzle Velocity: 2921 fps
Muzzle Device: No muzzle device included (All NFA rules apply)
Operating System: PWS Long Stroke Piston System with 3-Setting Adjustable Gas Regulator
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
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