Two point slings are ideal for most situations. There are times - deploying from a vehicle or fighting in complex structures - when a 1 point sling has a clear advantage. Combining our new polymer Burnsed Socket and Push Button, the Vickers 221 Sling allows users to switch from two-point to one-point mode instantly by pressing to release the Push Button 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 one- and two-point modes. Water Resistant Lightweight Fast Adjustment