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M829A2 cross-section. The next generation ammunition, called 120 mm APFSDS-T M829A2, entered service in 1994 and is the armor-piercing ammunition currently being produced by General Dynamics Ordnance and Tactical Systems for the 120 mm M256 gun of M1A1 and M1A2 tanks. It is a technology improvement over the M829A1.
The M829A2 APFSDS round was developed specifically as an immediate solution to address the improved protection of a Russian T-72, T-80U or T-90 main battle tank equipped with Kontakt-5 explosive reactive armor (ERA). [149] Later, the M829A3 round was introduced in 2002 to improve its effectiveness against next-generation ERA equipped tanks. [166]
The KE-W round is known for its exceptional armor-penetrating capabilities, utilizing kinetic energy to defeat armored targets. It is commonly used by modern main battle tanks as their primary anti-tank ammunition.
120×570mm NATO tank ammunition (4.7 inch), also known as 120×570mmR, is a common, NATO-standard (STANAG 4385), tank gun semi-combustible cartridge used by 120mm smoothbore guns, superseding the earlier 105×617mmR cartridge used in NATO-standard rifled tank guns.
Muzzle of a Rheinmetall 120 mm L/55 tank gun on a Spanish Leopard 2E. The Rheinmetall Rh-120 is a 120 mm smoothbore tank gun designed and produced in former West Germany by the Rheinmetall Waffe Munition GmbH company.
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The advanced Kontakt-5 explosive reactive armour on this Indian Army T-90S is arranged in pairs of plates with a triangular profile. Kontakt-5 is a type of second-generation [1] explosive reactive armour (ERA) originating in the Soviet Union.
As the entry for the M829A1 reveals, the weight of the penetrator for that round is 4.6 kg. For kinetic energy calculation, one could assume that the sabot weighs 4.4kg for all versions, but that's not appropriate for the wiki. The article could make the distinction clearer, though.NelC 15:53, 19 September 2021 (UTC)