PWS MK111 Mod 2-M 182M111UA0B | .223 Wylde | 11.85 in

The PWS MK111 Mod 2-M complete upper is built around Primary Weapons Systems’ long-stroke piston architecture with a 3-position adjustable gas system and is chambered in .223 Wylde. It pairs an 11.85 inch black barrel with an 11 inch PWS PicLok free-float handguard that accepts either M-LOK or Picatinny accessories on the forward section. The assembly includes a Radian Raptor ambidextrous charging handle and is delivered optics ready for modern sighting solutions.

This upper is intended for shooters seeking a low-fouling, tunable gas system and a compact barrel package suitable for precision-oriented work at short to mid ranges. Typical applications include precision target shooting and varmint hunting where controllable gas flow and consistent barrel performance matter.

Product Specifications

• The manufacturer is Primary Weapons Systems (PWS).
• The model is MK111 Mod 2-M.
• The manufacturer’s part number is 182M111UA0B.
• The chambering is .223 Wylde.
• The barrel measures 11.85 inches.
• The barrel finish is Black.
• The receiver material is listed as 7075-T6 Aluminum.
• The handguard is 11″ PWS PicLok (M-LOK or Picatinny).
• The handguard finish is Black.
• The system operates on a PWS long-stroke piston system with a 3-setting adjustable gas system.
• The muzzle device is listed as the PWS FSC 556.
• The charging handle is Radian Raptor ambidextrous.
• The rifling twist rate is 1:8.
• The upper is optic ready for modern sighting systems.
• The UPC is 811154033208.

This upper combines PWS’s piston reliability and an adjustable gas system with a precision-treated 11.85 inch barrel and a versatile PicLok handguard to deliver a compact, tuneable platform. It is well suited to users who prioritize reduced fouling and adjustable gas control in a short-barrel package while maintaining the ability to mount modern optics and accessories.