There are very few push button QD sling swivel manufacturers that I trust to make a consistently durable and reliable swivel. I am hoping that I can now add ALG Defense and their new Forged Sling Swivel (FSS) to that short list.
The FSS is different than most swivels in that it is made from mostly 7075 T6 aluminum instead of steel. The swivel is hard anodized for durability and the button, which is steel, is Black Nitride processed. As a result of the aluminum construction, these swivels weigh about .5 oz which is about half of what a typical QD swivel weighs.
ALG Defense will roll out the FSS at SHOT Show. Check out their website in the mean time.