Haley Strategic Partners D3 Slick, Sling, Features Tri-Glide Quick Adjust System and Low Profile Hydrophobic Pad, Coyote SLG_SLK-1-1-COY The D3 Slick Sling is the result of over 15 years of special operations use, revision and improvement, delivering a versatile platform intuitive to the point where the rifle becomes a natural extension of the body. Our tri-glide quick adjust system enables rapid transition from carrying a slung rifle comfortably to a stable combat ready shooting position. The D3 Slick Sling also features a comfortable low profile hydrophobic pad, inspired by the world's leading mountaineering climbing harnesses for stability and comfort without adding weight or bulk.