Product Description The Maxim Defense PDX-SD CQB is an integrally suppressed pistol platform chambered in .300 AAC Blackout, purpose-built for close-quarters applications where compactness and sound reduction are mission-critical. Classified as a Class 3 NFA item, this compact firearm integrates the suppressor directly into the overall design, keeping the total length to just 5.50" while delivering the ballistic performance of .300 Blackout. The all-black finish gives it a tactical, professional appearance, and the 5/8"x24 thread pattern ensures compatibility with standard accessories. Featuring Magpul components and Maxim Defense&';s signature engineering, the PDX-SD CQB is a premium, purpose-driven firearm for serious operators and collectors alike. Product Highlights Integrally Suppressed Design: Factory-built suppressor integration eliminates the need for a separate suppressor, resulting in a truly compact CQB package. .300 AAC Blackout Chambering: Offers excellent subsonic and supersonic performance in an ultra-compact platform, ideal for close-quarters use. Compact 5.50" Overall Length: Engineered for maximum maneuverability in tight spaces without sacrificing firepower or control. 5/8"x24 Thread Pattern: Standard thread pattern provides accessory compatibility and system versatility. Class 3 NFA Firearm: Built to the highest standards as a regulated NFA item, featuring premium materials, Magpul components, and an all-black tactical finish. Specs Brand: Maxim Defense Model: PDX-SD CQB Caliber: .300 AAC Blackout Thread Pattern: 5/8"x24 Overall Length: 5.50" Color: Black Classification: Class 3 (NFA) UPC: 680017478476 MPN: MXM47847 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>