While 2-point slings are ideal for most situations, there are times, like deploying from a vehicle or fighting in complex structures, when a 1-point sling has a clear advantage. 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. The 221 Sling fits any weapon with two QD sling swivel sockets with the rear socket towards the end of the receiver. 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. Features: Overall sling length adjustability is maintained through the use of Acetal triglides on the sling 1.25 inches sling webbing Invista solution dyed Cordura webbing ITW GhilleTex acetal hardware - a military grade, low IR plastic