Edgar Sherman Design ESD Paracord Guide, Adapter for Mounting Slings with Paracord, Polymer Construction, Matte Finish, Black ESD-PG-BLK The ESD Paracord Guide allows you to connect your ESD sling to your rifle with paracord and maintains a smaller profile knot that is tucked away and contained within the webbing of your sling. By having the knot stored securely in the paracord guide you no longer have to worry about the knot coming loose over time or untucking from the slings webbing and catching on anything and/or wearing into your neck.