The AMP is a single tank round that has different capabilities. It can:
• Serve as a ground and air fuze.
• Defeat dismounted infantry.
• Reduce obstacles.
• Defeat anti-tank guided missile teams at extended ranges.
• Breach reinforced walls.
It replaces and combines four stockpile tank munitions (the M830 High Explosive Anti-Tank round, M830A1 Multi-purpose Anti-Tank round, M1028 Canister round, and the M908 Obstacle Reduction round)....
..."If you were to compare the cost of a single AMP round to one of the single rounds it replaces, the AMP is going to cost more," explained McFarland. "However, by placing all these different capabilities into one round, we replace four rounds in the current inventory.
"Right now our crews face the dilemma as they go into combat of deciding what rounds to load in the turret and carry in the gun. If they choose wrong, they could have a mismatch between target and ammunition, which will cost them valuable seconds while in enemy contact....
..."AMP provides tank crews with confidence that they will have the right ammunition loaded as they move to contact regardless of the type of target presented," said McFarland.
"This ability to shave seconds off the first effective engagement can mean the difference between life and death," McFarland added....
https://www.army.mil/article/161228/Advanced_120mm_round_gives_tank_crews_more_versatility
