Born from the SOCOM PDW solicitation, the NEW Maxim Defense PDX™ is designed to handle the fierce demands of the Tier 1 community. The PDX™ dominates close-quarter encounters and achieves maximum energy on target. At the heart of the PDX™ is our Maxim SCW™ system. This patent-pending system cuts down the length of the stock to 4″. The integrated BCG with interchangeable buffer weights gives you maximum performance and versatility without sacrificing form and functionality. The PDX uses a Direct Impingement system.