[It] was probably a Russian RPG-7V or similar type light anti-tank rocket with a HEAT warhead. What caused the damage appeared to be an improved version with wave shaper in the HEAT warhead.
And according to an Army Times story on the incident
Whatever penetrated the tank created enough heat inside the hull to activate the vehicle’s Halon firefighting gear, which probably prevented more serious injuries to the crew.
In the end, a civilian weapons expert said, “I hope it was a lucky shot and we are not part of someone’s test program. Being a live target is no fun.”
Although it’s too early to tell, this almost certainly isn’t some sort of enemy “super weapon” that will render our tank force obsolete overnight. If it was indeed a lucky shot with an upgraded RPG, it might be the only time it happens.
And why is it that the RPG-7 is so damn good? Why aren’t WE buying them from the Russians? They’re selling to everyone else.