Cobalt Kinetics CK-PRO-LITE 5.56 NATO 11.5" Barrel Upper Assembly

The Cobalt Kinetics CK-PRO-LITE upper assembly delivers precision engineering in a lightweight 5.56 NATO platform optimized for close-quarters applications. This 11.5-inch barrel configuration strikes the optimal balance between maneuverability and ballistic performance for tactical operations.

What Makes This Different

Cobalt Kinetics manufactures this upper assembly using proprietary manufacturing processes that reduce weight without compromising structural integrity. The CK-PRO-LITE series incorporates advanced metallurgy and precision machining typically found in custom builds. Weight reduction reaches 15-20% compared to mil-spec alternatives while maintaining the same pressure ratings and durability standards.

Key Features

• 11.5-inch cold hammer forged barrel with 1:7 twist rate for optimal bullet stabilization
• Lightweight aluminum upper receiver with M4 feed ramps and enhanced ejection port
• Low-profile gas block with carbine-length gas system for reliable cycling
• Mil-spec barrel extension with proper headspace and chamber dimensions
• Compatible with standard AR-15 lower receivers and BCG assemblies
• Threaded 1/2x28 muzzle for suppressor and muzzle device attachment
• Black anodized finish provides corrosion resistance and reduced visibility

The 11.5-inch barrel length provides excellent maneuverability in confined spaces while maintaining sufficient velocity for effective terminal performance out to 300 yards. Law enforcement and military personnel favor this configuration for vehicle operations and building clearing scenarios. The carbine-length gas system ensures reliable function with both supersonic and subsonic ammunition when properly suppressed.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 11.5 inches
• Twist Rate: 1:7 inches
• Gas System: Carbine length
• Muzzle Threading: 1/2x28 TPI
• Upper Receiver: Forged 7075-T6 aluminum
• Finish: Type III hard coat anodizing
• Weight: Approximately 2.8 pounds (without BCG/charging handle)
• Overall Length: 18.5 inches

This upper assembly represents proven engineering from Cobalt Kinetics' extensive experience in precision rifle manufacturing. The CK-PRO-LITE series has established itself among professionals who require maximum reliability in demanding environments. Quality control standards exceed commercial specifications, ensuring consistent performance across production runs.