PWS MK114 Mod 2-M Upper, .223 Wylde, 14.5″ Barrel

The MK114 Mod 2-M complete upper from Primary Weapons Systems is built around the PWS long-stroke piston system and a 3-setting adjustable gas assembly for adaptable operation in varied conditions. It is chambered in .223 Wylde and features a 14.5" anodized barrel produced from 416R steel. The upper is supplied as a complete AR-15 fit package with M-LOK-compatible handguard and piston-driven reliability features.

Key Specifications

• The model is MK114 Mod 2-M.
• The chambering is .223 Wylde.
• The barrel length is 14.5".
• The barrel material is 416R Steel.
• The barrel finish is Anodized.
• The rate of twist is 1:8".
• The handguard interface is M-LOK.
• The operating system is PWS Long Stroke Piston with a 3-setting adjustable gas.
• The fit is AR-15.
• The listed weight is 4.7.

This complete upper combines PWS proven piston operation with a precision Boise-made 416R barrel and modern accessory compatibility via M-LOK and PicLok design elements. Its adjustable gas settings and suppressor-optimized characteristics make it suitable for users seeking a durable, adaptable AR-15 upper for precision-oriented and general-purpose use.