sabot; the penetrator includes a low-drag fin with a tracer and a windshield and tip assembly. Its propellant maintains consistent muzzle velocities across operational temperatures from . The new Advanced Combustible Cartridge Case is similar to previous models but has a relocated skive joint placement for better crew-member safety during handling. The initial order for 2,501 M829A4 rounds in 2014 had a unit cost of $10,100 each. On 20 July 2015, Orbital ATK announced that the M829E4 had passed First Article Acceptance Testing and was entering production. On 12 October 2015, Orbital ATK announced the round had recently received type classification as the M829A4 and was awarded a full-rate production contract to begin in early 2016. References External links M829A1 Technical details and images, from Global Security M829 120mm, APFSDS-T, from FAS.org PEO Ammunition Systems M829A4 (formerly M829E4) Armor Piercing, Fin Stabilized, Discarding Sabot – Tracer (APFSDS-T) Anti-tank rounds Military equipment introduced in the 1990s