Maxim PDX Upper - 300 Blackout - 5.5" - 1:5 - Pistol - Arid

Unmatched Power and Concealment in Close Quarters

For those who demand the highest performance in high-stakes environments, this 5.5-inch barreled upper receiver group in .300 Blackout is engineered to excel. Designed with the rigorous needs of Tier 1 operators in mind, this compact powerhouse is the ideal solution for close-quarter encounters where concealment and rapid response are critical. Whether you're navigating tight urban spaces, executing personal defense scenarios, or operating in confined tactical settings, this upper receiver delivers maximum energy on target without compromising accuracy at extended ranges. Built to seamlessly integrate with any Mil-Spec lower receiver, it offers versatility and reliability for professionals and enthusiasts alike who prioritize precision and dominance in every mission.

• Barrel Length: 5.5 inches, optimized for maneuverability and concealment.
• Caliber: .300 Blackout, providing superior stopping power and subsonic performance.
• Overall Length: Just 14 inches, ensuring a compact profile for tight spaces.
• HATEBRAKE™ Muzzle Booster: Patent-pending design reduces recoil, minimizes flash signature, and directs gasses downrange for enhanced operator control.
• Direct Impingement System: Ensures reliable cycling and consistent performance under demanding conditions.
• Premium Materials: Constructed from military-grade 6Al-4V Titanium, 17-4 Stainless Steel, and 7075/6061 Aluminum for unmatched durability.
• HK Height Rail: Offers a rigid mounting platform for optics and accessories.

When the situation demands discretion paired with devastating firepower, this ultra-compact