The M26 is a fragmentation hand grenade made by the United States.
The M26 is a fragmentation grenade developed by the United States military. It entered service around 1952 and was used in combat during the Korean War. Its distinct lemon shape led it to being nicknamed the "lemon grenade" (compare Russian F1 grenade, and Mk 2 Pineapple grenade, with similar nicknames).
Fragmentation is enhanced by a special pre-notched fragmentation coil that lies along the inside of the grenade's body. This coil had a circular cross-section in the M26 grenade and an improved square cross-section in the M26A1 and later designs.
The grenades were stored inside two-part cylindrical fiberboard shipping tubes (Container M289) and were packed 25 or 30 to a crate.
The JGSDF uses M26 hand grenades as their frag grenade.