Maxim Defense PDX:SD .300 BLK SBR with Maxim DSX Suppressor - Olive Drab Green

Maxim Defense PDX:SD .300 BLK SBR with Maxim DSX Suppressor - Olive Drab Green

Purpose-built to dominate the ultra-compact short-barreled rifle market with seamless suppressor integration, the Maxim Defense PDX:SD .300 BLK SBR in Olive Drab Green redefines sub-compact tactical firepower. As the flagship innovation from Maxim Defense's SDX suppressor-tuned lineup, the PDX:SD pairs a micro-footprint 5.5-inch barrel with a dedicated, integrated Maxim DSX suppressor. Powered by patented M-Kore™ Technology, this system delivers true hearing-safe sound attenuation while preserving high cartridge velocity, cycling reliability, and flat-shooting control in close-quarters maneuvers.

Engineered for extreme hard use and minimal maintenance, the included DSX suppressor is constructed from military-grade materials—including 6Al-4V titanium, 17-4 stainless steel, and 7075/6061 aerospace aluminum. The suppressor features no barrel length restrictions, integrated internal carbon cutters, reduced gas blowback, and full user-serviceability using standard tools. Chambered in .300 BLK with a fast 1:5" twist rate to stabilize heavy subsonic and high-velocity supersonic projectiles alike, the PDX:SD is fitted with a Maxim GEN:6 CQB system for rapid deployment. Protected by a tough DLC coating and Type III Olive Drab Green hardcoat anodization, the PDX:SD measures just 23.75 inches collapsed and weighs 7.6 pounds.

Features

Integrated Maxim DSX Suppressor w/ M-Kore™ Tech:
Specially tuned suppressor architecture delivers hearing-safe sound reduction with reduced gas blowback and optimized backpressure for full-powered .300 BLK loads.

User-Serviceable w/ Integrated Carbon Cutters:
Disassembles effortlessly using common hand tools for simplified maintenance, featuring internal carbon cutters that prevent carbon lockup and extend service life.

Military-Grade Multi-Material Construction:
Precision-engineered using 6Al-4V titanium, 17-4 stainless steel, and 7075/6061 aircraft aluminum to handle heavy duty cycles with zero barrel length restrictions.

5.5" Barrel w/ Ultra-Fast 1:5" Twist Rate:
Match-grade 5.5-inch threaded barrel utilizes a fast 1:5" twist rate specifically chosen to fully stabilize heavy subsonic and supersonic .300 BLK projectiles in short barrels.

Maxim GEN:6 CQB Collapsible System:
Factory-equipped with Maxim's compact GEN:6 CQB system, providing rock-solid shooting stability and fast deployment while maintaining a compact overall profile.

Premium Olive Drab Green & DLC Finish:
Coated in durable Olive Drab Green (ODG) Type III hardcoat anodization paired with Diamond-Like Carbon (DLC) interior finishes for extreme wear and corrosion resistance.

Reduced Gas Blowback Architecture:
Engineered gas flow paths direct combustion gases away from the shooter's face, making rapid string firing cleaner, cooler, and more comfortable.

Specifications