The Maxim Defense PDX in .300 BLK pairs the ultra-compact PDX platform with the suppressor-optimized .300 Blackout cartridge, creating one of the smallest effective suppressor hosts available. Type: Pistol Action: Gas-Operated Caliber: .300 Blackout Capacity: 30 Year introduced: 2019, USA Weight: 5.7 oz Overall length: 19.5" Status: Active Intended use: PDW, Suppressed Shooting, Tactical