Buy PWS MK111 Compound Pistol — a high-performance hybrid AR pistol that blends the proven reliability of the Mod 1 upper with the modern ergonomics of the ambidextrous Mod 2-M lower. Chambered in versatile .223 Wylde with an 11.85″ barrel, this compact piston-driven platform delivers exceptional maneuverability, accuracy, and reliability in a lightweight 6.2 lb package.
Equipped with Primary Weapons Systems’ renowned long-stroke piston operating system, the MK111 Compound Pistol runs significantly cleaner and more reliably than traditional direct impingement AR pistols. It excels in close-quarters scenarios, home defense, vehicle use, and as a premium suppressor host.
Key Features & Benefits
- Long-Stroke Piston System: Superior reliability with minimal carbon buildup, reduced fouling, and less gas blowback to the shooter — perfect for suppressed shooting.
- 11.85″ .223 Wylde Barrel: Precision 1:8 twist barrel optimized for both .223 Remington and 5.56 NATO ammunition. Provides excellent velocity and sub-MOA accuracy potential.
- Hybrid Mod 1 / MOD 2-M Design: Combines a traditional Mod 1 upper (with forward assist and full-length M-LOK handguard) with a fully ambidextrous Mod 2-M lower for enhanced ergonomics and faster operation.
- 11.05″ Full M-LOK Handguard: Slim, lightweight, free-floating design offers extensive accessory mounting options while maintaining superior heat dissipation and control.
- Ambidextrous Controls: Safety selector, bolt catch/release, and magazine release operable from either side for intuitive left- or right-handed use.
- 3-Position Adjustable Gas System: Easily tunable for suppressed or unsuppressed use.
- Premium Components: Radian Raptor ambidextrous charging handle, enhanced PTFE-coated trigger, PWS enhanced buffer system with H2 buffer, and high-quality muzzle device (PWS Triad or FRC compensator).
- Lightweight & Compact: Weighs only 6.2 lbs unloaded for exceptional handling and quick pointability.
Why Choose the PWS MK111 Compound Pistol .223 Wylde?
This hybrid pistol stands out for its balance of classic AR familiarity and cutting-edge upgrades. Manufactured in the USA, it offers softer recoil, faster follow-up shots, and greater reliability in adverse conditions compared to standard gas-impingement pistols. The compact 11.85″ barrel makes it highly maneuverable while the piston system keeps it running clean even after thousands of rounds.
Ideal for home defense, tactical training, range fun, or as a premium SBR base (with proper NFA compliance).
Technical Specifications
- Caliber: .223 Wylde (compatible with .223 Rem & 5.56 NATO)
- Barrel Length: 11.85″ with 1:8 Twist (41V50 or 416R Steel)
- Gas System: Carbine-Length, Long-Stroke Piston with 3-Position Adjustable Regulator
- Handguard: 11.05″ Full M-LOK
- Upper Receiver: PWS Mod 1 Forged with Forward Assist
- Lower Receiver: Ambidextrous MK1 MOD 2-M Forged 7075-T6 Aluminum
- Weight: 6.2 lbs (unloaded)
- Overall Length: Approximately 28.25″ (brace collapsed)
- Finish: Hardcoat Anodized Black
Experience compact piston power today. Add the PWS MK111 Compound Pistol .223 Wylde 11.85“ to your cart for unmatched short-barrel performance and reliability.

















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