If stealthy is high priority then better watch this video from One Hundred Concepts if you use QD slings... "Sling QDs are extremely useful... They are also noisy. Designed to have all the benefits of being able to rapidly remove a sling without the added rattling of metal-on-metal QDs and sockets. Our ParacordQD™ is a simple retention point that features a spring-loaded lock for you to clip in and out of after adding a small loop of paracord in your sling end.