The Magpul® MS4 QDM Sling quickly transitions between one-point and two-point configurations and upgrades the MS4 Dual QD Sling GEN2 with factory-installed Magpul QDM swivels. These QDM swivels feature a low-profile, single-handed design with a corrosion-resistant QPQ nitride finish and a strong, free-rotating bale that guides the webbing to prevent rollover. The system delivers enhanced strength, speed, and security while remaining fully compatible with standard QD sling cups found on most handguards, receivers, and stocks.