Cartridge, 105 mm: APFSDS-T M735 and M735A1

aluminium windshield with a steel tip to prevent aerodynamic heating. An aluminium fin assembly is fitted to the rear of the body and contains an M13 tracer, which burns for a minimum of 2.5 seconds, held in place by a threaded plug and disc assembly. The sabot is aluminium and has three 120º segments assembled around the subprojectile body and interfaced with the penetrator body by a series of mating buttress grooves. A stainless steel bourrelet, containing three shear cuts, is screwed onto the forward face of the sabot. A nylon obturator and polypropylene seal is assembled around it and a urethane seal is applied over the rear face. The brass M148A1B1 cartridge case contains approximately 5.67 kg of M30 propellant. An M120 electrical primer is fitted to the base; the primer includes a flash tube extending almost to the tail of the projectile assembly. Before loading, the primer is normally protected by a metal clip over the base of the cartridge case. A barrel wear reducing titanium dioxide liner is secured to the interior wall of the cartridge case. The 105 mm APFSDS-T M735 and M735A1 have a muzzle velocity of 1,501 m/s. The M735A1 penetrator can penetrate approximately 370 mm of armour set at 0º at 1,000 m. The US Army training round for the 105 mm M735/M735A1 is the TPDS-T M724A1. The TPDS-T M724A1 is also produced in Belgium by MECAR SA and in Egypt by the Heliopolis Company for Chemical Industries. In the USA the main producer of the TPDS-T M724A1 is General Dynamics, Ordnance and Tactical Systems (GD-OTS ). The main details for the TPDS-T M724A1 are round weight, 14.52 kg and round length, 838.2 mm. Muzzle velocity is 1,539 m/s using a single-base propellant.