Night Optics Falcon 6x Gen 3 Gated Long-Range Night Vision Binocular - Manual (Page 128)

3-9
Figure 3-1. Reinstalling the Neck Pad.
(3) Threading the Sliding Bar Buckles. While donning
and adjusting the headmount, it is possible for a strap to slip out of
a slide fastener. If necessary, reinstall as follows:
(a) Thread the strap from the inside of the buckle over
the moveable sliding bar (see Figure 3-2). Thread the strap back
through the buckle but this time under the moveable sliding bar
and over the serrated part of the buckle.