Just received mine today.
I gets said all the time but, this figure is so much better in person! The first thing I noticed when I peeled back the packaging is that photos don't do this guys proportions justice. In some pictures I felt like his head or hands look a little big; but in person its...
The little strap part ties together under his arm pit; along with the little Velcro pad holding it it place (assuming you have the ammo vest on).
I struggled with it at first NGL. :lol