The new MS1 Sling from Magpul is a dedicated 2-Point model that can also be used as a Single Point Sling through the use of adapters.
It’s built around their MS1 slider to provide rapid adjustments to either lengthen or shorten the sling with no slipping once set, and no tails, loops, or other potential snag hazards. The MS1 system also has a series of adapters that are sold separately and based on the MS3 and MS4 slings. By adding the appropriate adapter (available in Paraclip or QD) for the sling, you can easily add one-point functionality to your MS1.
They’ve been perfecting the design for some time now and had this to say about development -
In testing, the sling had to survive tens of thousands of cycles in wet, dry and sandy conditions, static load testing without slippage for 72 hours and weighted 6 foot dynamic drop tests. In addition to the controlled lab tests, we also swam it, jumped it, hunted with it, hiked into the mountains with it, and most importantly shot with it in a variety of rugged field conditions