This is a belt of .50BMG rounds.
It’s difficult to comprehend how much energy one of these suckers delivers. Each one leaves the gunbarrel with 15,000 LbFt of force. They can pierce armored plating, steel backstops, train track rails, steel beams, and cinderblocks. One round delivers enough energy to stop a charging knight on horseback.
50BMG rounds are specifically designed for the M2 Browning machine gun, lovingly nicknamed “Ma Deuce.” Ol’ Ma has been in service since WW1 and is capable of firing ten of these rounds per second.
A few seconds of continuous fire from an M2 would turn our T-Rex into this: