Con - Msr 11756003

M49a2 Mortar Percussion Primer
Type Classification:

CON MSR 11756003 (M49A4) OBS MSR 11756003 (M49A2)

Use:

This cartridge is fired in 60mm mortars M2 and M19 for use against personnel and light materiel, providing both fragmentation and blast effect.

Description:

The complete round consists of a projectile body a point-detonating fuze (staked), a fin assembly with a 2 inch extension! four increments of propellant charge, an Ignition cartridge, and a percussion primer. The projectile body is of forged steel or pearlitic malleable iron (PMI), and is threaded internally at the nose to accept the fuze and at the base to accept the fin extension. The body is filled with Composition B high explosive.

Functioning:

When the cartridge is loaded, it slides down the mortar tube until the percussion primer in the ignition cartridge strikes the firing pin in the base cap of the mortar. The flash from the primer ignites the ignition cartridge, and the cartridge ignites the propelling charge. Rapidly expanding gases from the burning pro-pellant expel the projectile from the mortar tube and propel it to the target. The projectile is fin-stabilized in flight. The point-detonating fuze functions on impact, detonating the fuze booster charge and, in turn, the Composition B high explosive. The bursting charge shatters the projectile body, producing near optimum fragmentation and blast effect at the target.

Tabulated Data:

Complete round:

Projectile:

Body material -------------------- Forged steel or cast PMI

Color -------------------------------- Olive drab w/yellow markings

0.42 lb

Components:

Fin assemby --------------------- M2 plus extension

series; PD, M717; PD M935

Temperature Limits:

Firing:

Storage:

Lower limit-------------------------80°F (for period not more than 3 days) (-62.2°C)

Upper limit ------------------------ +160°F (for period not more than 4 hr/day) (+71.1°C)

*Packing ------------------------------ 1 round in fiber container; l2 containers in wooden box

*Packing Box: Weight

Dimensions ----------------------- 16-1/16 x 135/8 x 11-5/16 in.

*NOTE: See DOD Consolidated Ammunition Catalog for complete packing data including NSN's.

Shipping and Storage Data:

UNO serial number --------------------------------0321

Quantity-distance class --------------------(08) 1.2

Storage compatibility group --------E

DOT designation ------------------- AMMUNITION FOR CANNON WITH

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