LARGE CALIBER AMMUNITION
105mm M456A2 HEAT-T
105mm M456A2 HEAT-T
105mm M456A2 HEAT-T
High Explosive Anti-Tank-Tracer
Description: The steel body projectile is fitted with a plastic obturator, a threaded standoff spike assembly, a fin and boom, and a PIBD fuze. A funnel-shaped copper liner within the body shapes the explosive charge of Comp B. A piezoelectric element retained in a nose cap is fitted to the spike assembly and is connected to the BD fuze in the body. The fin is threaded to receive a tracer.
Operation: The electrically initiated primer ignites the propelling charge. Gases produced by the burning propellant propel the projectile from the gun and ignite the tracer, which burns for a minimum of 2.5 seconds. On impact, fuze functioning detonates the projectile and cone collapses, creating a high-velocity focused shock wave and a jet of metal particles that penetrates the target.
Difference Among Models: The two models in the M456 series differ in the use of an impact switch assembly. The addition of the impact switch assembly provides for a higher functioning reliability in that initiation can occur upon contact with any part of the standoff spike assembly, i.e., improved performance on irregular surfaces and graze functioning.



105mm M456A2 HEAT-T Technical Specifications
Type Classification |
STD AMCTC 4677 dtd 1966 OBS MSR 11756003 |
Complete round: Type |
HEAT-T |
Weight |
49 lb (22.2 kg) |
Length |
39.6 in (1005.8 mm) |
Cannon used with |
M68 and L7 |
Projectile: Body material |
Steel |
Color |
Black w/yellow markings |
Filler and weight |
Comp B 2.14lbs. |
Components: Cartridge case |
M148A1B1 |
Propellant |
M30 |
Primer |
M83 |
Tracer |
M13 |
Fuze |
PIBD-M509A1 |
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