Combining Blue Force Gear’s polymer Burnsed Socket and patented RED Swivel the Vickers 221 Sling allows users to switch from 2-point to 1-point mode instantly by pulling on the RED Swivel knob and reinserting it in to the Burnsed Socket at the rear of the receiver. The instantaneous adjustability of the sling is still maintained in both single and 2 point modes. Constructed similar to the worlds standard Vickers Combat Applications Sling a RED Swivel is sewn to the front of the sling towards the muzzle. A standard push button swivel and molded Burnsed Socket are woven onto the rear allowing full adjustability of the sling for use with or without body armor. The 221 Sling fits any weapon with two QD sling swivel sockets with the rear socket towards the end of the receiver. NOTE: For SCARS Sigs HKs or other weapon systems with eyelets at the rear of the receiver a Universal Wire Loop with Push Button Socket can be added instead of the included push button socket.