The MS4 features two heavy-duty push-button QD Sling Swivels, along with a custom steel connection ring to allow one to two-point convertibility. This modification allows compatibility with QD sling cups commonly found on lower receivers, receiver end plates, buttstocks, and many low-profile forward QD Sling Mounts. The MS4 Dual QD GEN2 incorporates a new, low profile quick-adjust slider which minimizes bulk and allows for secure, yet effortless, sling adjustment.