Maxim Defense Pdx Upper 300 AAC Blackout 5.5 Arid

The Maxim Defense Maxim Pdx Upper 300blk 5.5" Arid delivers a compact, reliable platform built around a Direct Impingement system and the patent-pending Maxim HATEBRAKE Muzzle Booster, which significantly reduces recoil, lowers flash signature, and redirects gases and concussion away from the operator for improved control in short-barreled rifles and pistols. Weighing 4 lbs with an overall length of 14 inches and a 5.5-inch barrel chambered in .300 Blackout, this Arid Earth Type-III Hard Anodizing upper combines military-grade materials including 6Al-4V titanium, 17-4 stainless steel, and 7075/6061 aluminum for enhanced durability and rigidity. It features an M-slot compatible handguard, an HK height rail for a more rigid upper receiver, and a Maxim Mil-Spec BCG to optimize reliability and performance when paired with any Mil-Spec lower. The PDX U.R.G. is designed to deliver optimized personal defense weapon performance with improved low-flash and sound signatures, ensuring smooth handling and precise execution, while maintaining compatibility and durability across demanding field and range scenarios.