Colt LE6933-EPRII-PRO-HUX-CK 5.56 NATO 11.5" Upper Receiver Conversion Kit with Hux QD 556 Flash Hider (UPC 098289035691)

The Colt LE6933-EPRII-PRO-HUX-CK 5.56 NATO 11.5" Upper Receiver Conversion Kit with Hux QD 556 Flash Hider (UPC 098289035691) is a premium, factory-assembled upper receiver designed for professional users who demand the highest level of performance from their AR-15 platform. This Enhanced Patrol Rifle G2 Pro conversion kit features an 11.5-inch barrel and is equipped with the Huxwrx QD 556 flash hider, which functions as both an effective flash suppressor and a quick-detach mount for compatible Huxwrx suppressors. The “Pro” designation signifies that this upper includes upgraded components and refinements specifically selected for law enforcement, military contractors, and serious tactical shooters. Built to Colt’s exacting standards, this conversion kit allows owners of compatible lower receivers to easily upgrade to a compact, suppressor-ready 11.5" configuration with professional-grade features and reliability.

This upper receiver conversion kit represents the top tier of Colt’s Enhanced Patrol Rifle lineup, combining the compact advantages of an 11.5-inch barrel with modern suppressor mounting technology and enhanced internal components.

11.5-Inch Barrel for Superior Maneuverability

The 11.5-inch barrel is the centerpiece of this conversion kit. This barrel length dramatically reduces the overall length of the rifle compared to standard 16-inch carbines, making it ideal for close-quarters battle, vehicle operations, and confined space work. Despite the shorter barrel, the 11.5" length maintains excellent terminal ballistics with 5.56 NATO ammunition at typical engagement distances. The gas system has been properly tuned at the factory for reliable function with this barrel length, ensuring consistent cycling whether the rifle is used suppressed or unsuppressed.

Huxwrx QD 556 Flash Hider / Suppressor Mount

This conversion kit comes equipped with the Huxwrx QD 556 flash hider. This advanced muzzle device provides excellent flash suppression when the rifle is used without a suppressor. More importantly, it serves as a quick-detach mounting interface for Huxwrx (formerly SilencerCo) 5.56 suppressors. The QD system allows for fast, secure, and repeatable attachment and removal of a suppressor without tools. This capability is highly valued by professionals who need to quickly transition between suppressed and unsuppressed configurations during operations.

Enhanced Patrol Rifle G2 Pro Upgrades

The “Pro” model includes several upgraded components not found on standard Enhanced Patrol Rifle uppers. These enhancements typically include a premium bolt carrier group, optimized gas system components, improved extractor, and other high-reliability parts chosen specifically for demanding professional use. The G2 Pro configuration reflects Colt’s ongoing development based on feedback from law enforcement and military users, resulting in improved durability, smoother operation, and greater overall reliability under extreme conditions.

Factory-Assembled Quality Assurance

Unlike aftermarket upper builds, the LE6933-EPRII-PRO-HUX-CK is assembled at the Colt factory under strict quality control standards. Every upper is properly headspaced, timed, and function-tested before leaving the facility. This level of quality control is especially critical in short-barreled configurations, where gas system tuning and component fitment directly impact reliability. Users can install this upper with confidence knowing it meets Colt’s rigorous performance standards.

Ideal Applications

• Converting a standard lower into a professional 11.5" SBR
• Law enforcement patrol and tactical team rifles
• Close-quarters battle and vehicle operations
• Suppressed shooting with Huxwrx QD suppressors
• Professional security and contractor use
• High-reliability duty and training rifles

Why Choose the Colt LE6933-EPRII-PRO-HUX-CK?

• Factory-assembled 11.5" upper with Hux QD 556 flash hider
• Enhanced Patrol Rifle G2 Pro upgrades for maximum reliability
• Quick-detach suppressor mounting capability
• Properly tuned gas system for short barrel performance
• Proven Colt quality control and engineering
• Black finish for a professional, non-reflective appearance
• Compatible with Colt and mil-spec lower receivers

The Colt LE6933-EPRII-PRO-HUX-CK 5.56 NATO 11.5" Upper Receiver Conversion Kit with Hux QD 556 Flash Hider (UPC 098289035691) is a top-tier factory upper receiver designed for professionals who require the highest levels of performance and reliability. Featuring an 11.5-inch barrel and the Huxwrx QD 556 flash hider, this conversion kit allows users to transform their existing lower receiver into a compact, suppressor-ready platform. The Enhanced Patrol Rifle G2 Pro configuration includes upgraded components specifically chosen to meet the rigorous demands of law enforcement and tactical operations. Whether you’re a law enforcement officer, military contractor, or serious shooter looking to add a high-quality 11.5" upper to your collection, this Colt conversion kit delivers exceptional build quality, modern suppressor compatibility, and the legendary reliability that has made Colt the trusted choice for professionals worldwide. Its combination of factory assembly, G2 Pro enhancements, and Huxwrx QD technology makes the LE6933-EPRII-PRO-HUX-CK one of the most complete and capable 11.5" upper receiver conversion kits available today.

Upgrade to professional-grade performance with the Colt Enhanced Patrol Rifle G2 Pro 11.5" Upper Conversion Kit.