Buy MK114 MOD 2-M Upper (Pinned) .223 Wylde

Discover the PWS MK114 MOD 2-M Upper (Pinned) .223 Wylde — a premium complete upper receiver designed for shooters who want compact size with full legal compliance. This factory-pinned upper features a 14.5″ barrel professionally pinned and welded to a PWS muzzle device, resulting in a legal 16″ overall length without the need for NFA paperwork.

Built around Primary Weapons Systems’ renowned long-stroke piston operating system, the MK114 MOD 2-M delivers cleaner operation, reduced fouling, softer recoil, and superior reliability compared to standard direct impingement uppers. It pairs perfectly with MOD 2-M ambidextrous lowers, making it an ideal choice for building a feature-rich, reliable, and highly accurate AR-15 rifle.

Key Features & Benefits

• Long-Stroke Piston System: Exceptional reliability with minimal carbon buildup and gas blowback. Includes a 3-position adjustable gas regulator for optimized performance with or without a suppressor.
• 14.5″ Pinned & Welded Barrel: Precision .223 Wylde chamber with 1:8 twist rate, pinned and welded to a PWS FSC compensator for a legal 16″ overall length.
• MOD 2-M Forged Upper: Lightweight forged 7075-T6 aluminum upper with modern styling and enhanced ergonomics.
• Extended M-LOK Handguard: Slim, free-floating design offers maximum accessory mounting flexibility and excellent heat dissipation.
• .223 Wylde Chamber: Optimized for both .223 Remington and 5.56 NATO ammunition with outstanding accuracy and versatility.
• Suppressor Ready: Low back-pressure piston system performs exceptionally well with modern suppressors.
• Premium Components: Enhanced bolt carrier group, Radian Raptor compatible charging handle, and high-quality pinned muzzle device.

Why Choose the PWS MK114 MOD 2-M Pinned Upper?

This pinned upper is perfect for builders who want the maneuverability of a short barrel rifle without the NFA tax stamp and paperwork. The long-stroke piston design makes it far more reliable and easier to maintain than traditional uppers, especially in suppressed configurations or adverse conditions. Manufactured in the USA, it offers sub-MOA accuracy potential and smooth, soft-shooting performance.

Technical Specifications

• Caliber: .223 Wylde (compatible with .223 Rem & 5.56 NATO)
• Barrel Length: 14.5″ (Pinned & Welded to 16″ Overall Length)
• Barrel Twist: 1:8
• 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
• Muzzle Device: PWS FSC Compensator (Pinned & Welded)
• Finish: Hardcoat Anodized Black
• Compatibility: Designed for MK1 MOD 2-M ambidextrous lowers

Upgrade your build with premium piston performance. Add the PWS MK114 MOD 2-M Upper (Pinned) .223 Wylde to your cart today and experience top-tier reliability and accuracy.