Improved 120mm ammunition
The M829E4 (soon to be type-classified as the M829A4) is the fifth-generation kinetic-energy anti-tank (AT) round. This new round provides heavy-armor defeat capability at extended ranges. It uses a depleted-uranium penetrator and anti-armor design advancements to defeat threat targets equipped with AERA and APS.
The advanced multi-purpose (AMP) round is a line-of-sight munition with three modes of operation: point detonate, delay and airburst. This essential capability required in urban environments allows the tank crew to defeat AT guided-missile teams at ranges of 50 to 2,000 meters with a precision lethal airburst. The point-detonate and delay modes allow for obstacle reduction (OR), bunker defeat and a wall-breach capability for dismounted infantry. The AMP round also reduces the logistics burden by replacing four existing rounds (M830 high-explosive (HE) AT, M803A1 multipurpose HEAT, M1028 canister and M908 HE-OR).