Description
To defeat armored targets, against personnel, for screening, signaling or for incendiary effect against flammable targets.
The rifle grenade HEAT, M31 is a point-initiated, base-detonated (PIBD), high-explosive, antitank (HEAT) grenade. It employs a shaped charge to defeat armor plate or concrete, and will function against targets at all angles of obliquity up to 65°. The grenade uses a piezoelectric assembly which generates an electric current when crushed on impact with the target. This action initiates the explosive train. Only rifle grenades M31, which are assembled with modified nose assemblies, are authorized for uses. The modified nose assembly has a positive ground between the piezoelectric crystal and the metal nose protector cap.
Rifle grenade M31 consists of three basic parts: the cylindrical body with conical ogive and conical rear section; the fuze; and the stabilizer. The ogive contains a piezoelectric assembly in the nose. A lead wire (in conduit) connects this assembly to the fuze, in the base of the body. The body contains Comp B molded against a copper shaped charge liner. A booster is contained in the fuze at the base of the body.
Fuze M211 consists of a base, spring-driven detonator rotor and a cover. The detonator rotor contains an electric detonator. The base contains a setback leaf assembly. The cover contains a booster pellet. The aluminum stabilizer consists of a stabilizer tube, with an adapter at its forward end (for connection to the body), and a fin assembly at the other end. When assembled, the fuze is held within the adapter.
Functioning
No information about functioning.
Hazardous Components
No information about hazardous components.
See Also
Nothing else to see.
Source(s)
TM 43-0001-29, Grenades (chg 4, 2002)
