The SafarilandQuick Locking System QLS 19 Holster Locking Fork is designed to mount directly to the back of the holster. The QLS 19 can also be used on Molle webbing loops if it is attached to an MLS 16 Accessory Locking Fork which is threaded through the Molle loops. This system allows mounting options to quickly and easily change locations and positions of your holstered weapon. The Safariland Quick Locking System QLS 22 Receiver Plate is designed to be the mounting platform for the QLS 19 Locking Fork. This plate can be attached to any Safariland 3-hole backpiece (belt slide, paddle, etc), onto the front of an MLS 16 Accessory Locking Fork which is threaded through Molle loops, or onto practically any flat surface with the appropriate screws (not included).