Buy MK1 Compound Rifle, .223 Wylde, 16″ Barrel, FSC556, CompMag

PWS MK1 Compound Rifle for sale — a premium hybrid AR-15 built for reliability, accuracy, and full compliance in restricted states. This model features a 16″ (16.1″) .223 Wylde barrel, PWS FSC556 compensator, and CompMag fixed magazine system, making it fully California compliant while delivering top-tier piston-driven performance.

The MK1 Compound combines the proven Mod 1 upper (with forward assist and full M-LOK handguard) with the modern ambidextrous MK1 MOD 2-M lower. Powered by Primary Weapons Systems’ renowned long-stroke piston operating system, it runs cleaner, cooler, and more reliably than traditional direct impingement rifles — ideal for suppressed shooting, high-round-count training, or duty use.

Key Features & Benefits

• Long-Stroke Piston System: Exceptional reliability with minimal fouling, reduced carbon buildup, and less gas blowback. Includes a 3-position adjustable gas regulator for optimized suppressed or unsuppressed performance.
• 16″ .223 Wylde Barrel: Precision 1:8 twist barrel delivers excellent accuracy and velocity with both .223 Remington and 5.56 NATO ammunition. Sub-MOA potential with match-grade loads.
• FSC556 Compensator: Factory-installed PWS FSC 556 muzzle device effectively reduces recoil and muzzle flash for faster follow-up shots.
• CompMag Fixed Magazine: California-compliant fixed magazine system (typically 10-round capacity) meets strict state regulations without sacrificing functionality.
• Hybrid Mod 1 / MOD 2-M Design: Traditional Mod 1 upper paired with a fully ambidextrous Mod 2-M lower for enhanced ergonomics and intuitive operation.
• 15.05″ Full M-LOK Handguard: Slim, lightweight, free-floating design provides maximum accessory mounting flexibility.
• Ambidextrous Controls: Safety selector, bolt catch, and magazine release work from both sides for left- or right-handed shooters.
• Premium Components: Radian Raptor ambidextrous charging handle, enhanced PTFE-coated trigger, and PWS enhanced buffer system.

Why Choose the PWS MK1 Compound Rifle with CompMag?

Manufactured in the USA, this hybrid piston rifle offers softer recoil, superior reliability in adverse conditions, and easier maintenance compared to standard AR-15s. The CompMag version is perfect for California shooters or residents in other restricted states who want feature-rich performance without hassle.

Whether for home defense, range training, or recreational shooting, the MK1 Compound delivers balance, precision, and dependability in a compliant package.

Technical Specifications

• Caliber: .223 Wylde (compatible with .223 Rem & 5.56 NATO)
• Barrel Length: 16.1″ with 1:8 Twist
• Gas System: Mid-Length, Long-Stroke Piston with 3-Position Adjustable Regulator
• Handguard: 15.05″ Full M-LOK
• Upper Receiver: PWS Mod 1 Forged with Forward Assist
• Lower Receiver: Ambidextrous MK1 MOD 2-M Forged 7075-T6
• Muzzle Device: PWS FSC556 Compensator
• Magazine: CompMag Fixed Magazine (CA Compliant)
• Trigger: Enhanced Mil-Spec PTFE-Coated
• Weight: Approximately 6.8–7.0 lbs (unloaded)
• Finish: Hardcoat Anodized Black

Get compliant premium performance today. Add the PWS MK1 Compound Rifle .223 Wylde 16″ FSC556 CompMag to your cart for a reliable, feature-packed piston AR-15.