Buy MK111 MOD 2-M Upper .223 Wylde

Buy PWS MK111 MOD 2-M Upper .223 Wylde — a premium complete upper receiver assembly designed for shooters who demand modern ergonomics and piston-driven reliability.

This upper features an 11.85″ .223 Wylde barrel and Primary Weapons Systems’ renowned long-stroke piston operating system. It pairs perfectly with MOD 2-M ambidextrous lowers, giving you a clean-running, low-maintenance, and highly accurate .223 Wylde platform. Whether you’re building a pistol, SBR, or short-barreled rifle, the MK111 MOD 2-M upper delivers superior performance over traditional direct impingement uppers.

Key Features & Benefits

• Long-Stroke Piston System: Runs significantly cleaner with minimal carbon buildup and reduced gas blowback. Includes a 3-position adjustable gas regulator for perfect tuning with or without a suppressor.
• 11.85″ .223 Wylde Barrel: Precision barrel with 1:8 twist rate, optimized for both .223 Remington and 5.56 NATO ammunition. Excellent velocity and sub-MOA accuracy potential.
• MOD 2-M Forged Upper: Lightweight forged 7075-T6 aluminum upper with modern styling and no forward assist for reduced weight and sleek appearance.
• 11.05″ Full M-LOK Handguard: Slim, free-floating design offers maximum accessory mounting space while maintaining excellent rigidity and heat management.
• Ambidextrous Ready: Fully compatible with PWS MK1 MOD 2-M ambidextrous lowers for intuitive left or right-handed operation.
• Suppressor Optimized: Low back-pressure piston system makes it an outstanding host for modern suppressors.
• Premium Components: Includes enhanced bolt carrier group, Radian Raptor compatible charging handle cut, and PWS muzzle device (FSC or Triad).

Why Choose the PWS MK111 MOD 2-M .223 Wylde Upper?

This upper is ideal for builders who want the latest MOD 2-M platform in a compact, maneuverable configuration. The long-stroke piston design offers unmatched reliability, easier cleaning, and softer recoil compared to standard AR uppers. Manufactured in the USA, it’s perfect for home defense builds, tactical setups, or suppressed short-barrel rifles.

Technical Specifications

• Caliber: .223 Wylde (compatible with .223 Rem & 5.56 NATO)
• Barrel Length: 11.85″ with 1:8 Twist
• Gas System: Carbine-Length Long-Stroke Piston with 3-Position Adjustable Regulator
• Handguard: 11.05″ Full M-LOK Free-Float
• Upper Receiver: Forged 7075-T6 MK111 MOD 2-M
• Operating System: PWS Long-Stroke Piston
• Finish: Hardcoat Anodized Black
• Compatibility: Perfect match for MOD 2-M ambidextrous lowers

Build your dream piston AR today. Add the PWS MK111 MOD 2-M Upper .223 Wylde 11.85″ to your cart and experience premium performance.