Maxim Defense PDX Upper AR Rifles 5.5in 5.56 NATO HATEBRAKE URG

The Maxim Defense PDX U.R.G. is engineered to deliver enhanced control and reliability in short-barrel AR platforms, pairing a Direct Impingement system with the patent-pending Maxim HATEBRAKE muzzle booster to significantly reduce recoil, lower flash signature, and push gas and concussion waves downrange away from the operator for improved follow-up shots. Built as an optimized Personal Defense Weapon Upper, this 5.5-inch 5.56x45mm NATO upper weighs 4 lbs and measures 14 inches overall with a 5.5-inch barrel and 5/8-24 muzzle threads, finished in rugged Black Type-III Hard Anodizing. The HATEBRAKE is installed under the handguard for enhanced stabilization, while the M-slot compatible handguard and HK-height rail provide solid mounting options and a rigid upper receiver when paired with Mil-Spec lowers. Constructed from military-grade materials including 6Al-4V Titanium, 17-4 Stainless Steel, 7075 and 6061 Aluminum, the upper is designed for durability and long-term performance, and is compatible with Maxim Mil-Spec BCGs or PDX/SCW-compatible BCGs. With features that optimize reliability, reduce low-flash and sound signatures, and support AR rifles, the PDX U.R.G. from Maxim Defense is a purpose-built, high-performance option for demanding shooters.