After much trialling and testing of various off-the-shelf components, we've decided to simply create our own slider buckle for our Quick Adjust Sling. The sling pictured is a test version of our first prototype, made for function checking only. This was taken right off of a personal rifle.
The slider buckle is laser cut from plastic, but the production version will be made from 6061 T6 Aluminum. We are still making some dimensional adjustments, trying to optimize the webbing path, so it will be smooth and easy to operate. Even though the final buckle will be made from Aluminum for strength, keeping it light is still a major consideration. The metal triglides and the push button QD swivels won't be standard, be we are looking at providing these as options.