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General Dynamics Ordnance and Tactical Systems
M456 HEAT
U.S. 105 mm shaped-charge HEAT round fired from the M68 rifled gun, standard anti-armor round for the M60 Patton for much of the Cold War.
Compiled from public sources ·primary reference ↗ ·last verified 2026-07-05
Procurement snapshot
Availability & export
US ITAR-controlled
Export needs U.S. State Dept (DDTC) approval; end-use & re-transfer restrictions apply.
Channel: Foreign Military Sales (FMS) or Direct Commercial Sale
Fielded & proven
Operator data not public
Status: legacy.
Lifecycle cost (est.)
No public unit price to model from.
Interoperability
Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.
Full specifications
Firepower
Armament, payload and guidance.
- Caliber
Bore diameter of the main gun or rifle. Larger throws heavier projectiles; not simply better, ammunition commonality matters.
- 105 mm
Munition
Round type, penetration, velocity and projectile data.
- Round type
APFSDS (kinetic sabot), HEAT / multipurpose, HE-FRAG, canister or gun-launched ATGM.
- HEAT
- Caliber
Bore diameter the round is fired from.
- 105 mm
- Penetration
Published/estimated rolled-homogeneous-armour-equivalent penetration. Values are open-source estimates; real figures are classified.
- 400 mm RHA Stronger than 17% of munitions
- Muzzle velocity
Speed as the projectile leaves the barrel. Higher flattens trajectory and shortens time-to-target.
- 1,170 m/s Stronger than 35% of munitions
Specifications compiled from public General Dynamics Ordnance and Tactical Systems and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-05.
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