Buy MK114 MOD 2-M Upper .223 Wylde (NO COMPENSATOR)

Buy PWS MK114 MOD 2-M Upper .223 Wylde (No Compensator) — a versatile complete upper receiver designed for custom builders and precision enthusiasts. This upper comes with a factory 14.5″ .223 Wylde barrel without any muzzle device installed, giving you full flexibility to pin & weld your own compensator, install a suppressor mount, or run it as a bare threaded barrel.

Equipped with Primary Weapons Systems’ proven long-stroke piston operating system, this upper delivers superior reliability, reduced fouling, and minimal gas blowback compared to standard direct impingement uppers. It pairs perfectly with MOD 2-M ambidextrous lowers, making it an excellent foundation for building a custom 16″ non-NFA rifle, suppressor host, or personalized SBR.

Key Features & Benefits

• Long-Stroke Piston System: Exceptional reliability with significantly less carbon buildup and cleaner operation. Features a 3-position adjustable gas regulator for easy tuning with suppressors or different muzzle devices.
• 14.5″ .223 Wylde Barrel: Precision barrel with 1:8 twist rate, optimized for both .223 Remington and 5.56 NATO. Delivers excellent accuracy and velocity.
• Bare Threaded Muzzle: No compensator installed — ready for your choice of pinned & welded device, flash hider, or suppressor adapter (1/2×28 threads).
• MOD 2-M Forged Upper: Lightweight forged 7075-T6 aluminum receiver with modern styling and enhanced ergonomics.
• Extended M-LOK Handguard: Slim, free-floating design provides maximum accessory mounting space while maintaining rigidity and heat dissipation.
• Suppressor Ready: Low back-pressure piston system performs exceptionally well when suppressed.
• Premium Components: Enhanced PWS bolt carrier group and high-quality internals for smooth, reliable function.

Why Choose the PWS MK114 MOD 2-M Upper (No Compensator)?

This “no compensator” version gives builders maximum customization options. Whether you want to create your own pinned & welded 16″ legal rifle, install a specific muzzle brake, or run a direct-thread suppressor, this upper gives you complete control. The long-stroke piston system ensures the rifle runs reliably with minimal maintenance, making it ideal for custom home defense, competition, or tactical builds.

Technical Specifications

• Caliber: .223 Wylde (compatible with .223 Rem & 5.56 NATO)
• Barrel Length: 14.5″ with 1:8 Twist
• Muzzle Threads: 1/2×28 (No Compensator Installed)
• Gas System: Mid-Length Long-Stroke Piston with 3-Position Adjustable Regulator
• Handguard: Extended Free-Float M-LOK
• Upper Receiver: Forged 7075-T6 MK114 MOD 2-M
• Finish: Hardcoat Anodized Black
• Compatibility: Perfect for MK1 MOD 2-M ambidextrous lowers

Build your custom piston AR exactly how you want it. Add the PWS MK114 MOD 2-M Upper .223 Wylde 14.5″ (No Compensator) to your cart today.