The M17 (also known as the T2 grenade
) is a rifle grenade that was used by the United States during World War II.
"GRENADE, RIFLE, FRAGMENTATION, IMPACT, Ml7—
This grenade consists of a fin stabilizer assembly with impact type fuze similar to that used for Grenade, AT, M9Al. The head consists of a Mk. IIA1 hand grenade fuze body which is screwed in the fuze adapter on the stabilizer assembly. The Ml7 grenade is used in a manner identical with that of the Adapter, Grenade Projection, Ml, however, it offers a unit ready for firing without assembly in the field as is required for the Ml adapter"
WAR DEPARTMENT, INFANTRY FIELD MANUAL § WEAPON AND AMMUNITION TECHNICAL MANUAL, INFANTRY REGIMENT, PARACHUTE, June 1944, Page 43
Once the warhead is screwed in, the M17 is fitted onto a grenade launcher adapter, such as the M7 grenade launcher. A special blank .30-06 cartridge is inserted into the rifle, then fired. The M17 will not explode if it lands