This shows off Beta's mechanism really well...

https://scontent-lhr3-1.xx.fbcdn.net...39&oe=58B45EB0

You can see in that image where the Aluminium arm comes down on the side. Its mounted on a pair of car engine bushings and then also has a block of rubber on the bottom that gets sandwiched between the armour and the mount. Between those 2 sets of shocks it can absorb energy in any direction and allows the armour to rest perfectly on the ground.

You can also see how tired running a HW in a competition makes you.

EDIT: here is another image showing off the front shocks as well - https://scontent-lhr3-1.xx.fbcdn.net...ac&oe=58B7E43B