CSF (Carbine Sling, Forward Controls) is a simple 2 point adjustable sling with typical Forward Controls Design attention to detail.
When creating the CSF, we follow our established project development procedures: define the objectives, develop means to achieve them, early proof of concept prototypes, and weeks and months of tweaking and refinement before it becomes a shipping product.
CSF isn't modeled after or based on any particular sling, though one may say Vickers comes close. We defined the areas we deemed important and honed in on these. There are only so many ways to make a 2 point adjustable sling, CSF isn't meant to be ground breaking, it is designed to be a hard use sling that is easy and intuitive to operate. As shooters ourselves, we're no strangers to slings and using them, we have experimented with quite a few throughout the years, including the much maligned single point nut busters, which eventually turned into leashes for our Poodle mix, Charlie.
CSF in development, July, 2020. We used what plastic hardware we could salvage from slings (we turned into leashes for Charlie) for the mock up.