Originally Posted by chris_armyboy_sas
what are those chains for?
the little dangling things off of the turret?/
are they made to detonate rockets before they touch the tank??
At the end of each of those chains around the back of the turret, there is a small [~1"] steel ball.
That steel ball is only a shell, it is filled with a semi-sensitive high explosive. The chain itself is also connected to a primer on one end of the ball.
If an enemy HEAT cannon round hits the chain, it will yank on the primer, which will set off the explosives inside the ball, which will then detonate the HEAT round before it hits the tank.
It can work on RPGs too.
The Israelis are masters of Reactive Armor.