Maxim PDX Upper - 556 NATO - 5.5" - 1:5 - Pistol - Black

Unmatched Performance in Close Quarters with Elite Tier 1 Design

For those seeking the ultimate in compact firepower, this 5.5-inch barreled upper receiver group (URG) from Maxim Defense redefines personal defense and tactical operations. Engineered for Tier 1 operatives, this system is built to excel in close-quarter encounters (CQE) where speed, concealment, and devastating energy on target are paramount. Whether you're navigating tight urban environments, conducting high-stakes missions, or ensuring personal protection in confined spaces, this URG seamlessly integrates with any Mil-Spec lower receiver, delivering unmatched reliability and precision. Its innovative design, featuring the proprietary HATEBRAKE Muzzle Booster, mitigates recoil and flash signature while redirecting concussion waves downrange, ensuring the operator maintains control and situational awareness in the most demanding scenarios.

• Barrel Length: 5.5 inches, optimized for maximum concealability and maneuverability.
• Overall Length: Just 14 inches, ideal for close-quarter engagements.
• Operating System: Direct Impingement for reliable cycling and performance.
• HATEBRAKE Muzzle Booster: Reduces recoil, minimizes flash, and directs gasses away from the operator.
• Material Construction: Premium military-grade materials including 6Al-4V Titanium, 17-4 Stainless Steel, and 7075/6061 Aluminum for durability and lightweight design.
• Handguard Compatibility: M-slot compatible for versatile accessory mounting.
• Rail System: HK height rail ensures a rigid, stable upper receiver platform.
• BCG Included: