Maxim Defense PDX Upper – 5.56 NATO, 5.5 in

Description

The Maxim Defense PDX U.R.G is a compact complete upper built to install on any Mil‑Spec lower receiver. With a 5.5 inch barrel and 14 inch overall length, it is intended for use where a short, maneuverable package is required. The PDX U.R.G features Maxim’s HATEBRAKE muzzle booster to reduce felt recoil and manage flash signature. The upper employs a direct impingement gas system and is finished in black.

Key Specifications

• Chambered for .223 Rem / 5.56 NATO.
• The barrel length is 5.5 inches.
• The overall length measures 14 inches.
• Equipped with the Maxim HATEBRAKE Muzzle Booster.
• Uses a direct impingement gas system.
• Designed to fit Mil‑Spec AR lower receivers.
• Finished in black.
• Model designation is PDX.
• Product type is complete upper receiver.

Purpose-built and compact, the Maxim Defense PDX upper offers a short, serviceable platform that balances maneuverability with controllability. Its integrated muzzle booster and direct impingement design deliver a compact package suited for close-quarters applications and users who prioritize a small-form upper without sacrificing standard AR compatibility.