F-1

The F-1 was developed based on the French F-1 fragmentation grenade of the 1915 model (not to be confused with the modern F1 in a plastic case and semi-finished fragments) and the English Lemon system grenade, which were supplied to Russia during World War I, hence the name F-1 and the nickname "lemon", which has nothing to do with the fruit.

Marking marks on the bodies of F-1 grenades G, GZ - Armature Plant, Gus-Khrustalny O - Omutinsky Metallurgical Plant, Kirov Region P, PZ - Peskovsky Iron Foundry, Kirov Region R - Rzhev Mechanical Plant, Sverdlovsk Region T, TK, t - Correctional Labor Colony ITK-1, Tambov UMZ, UOMZ Usmansky Mechanical Plant, Voronezh Region Ya - Yartsevsky Machine-Building Plant, Smolensk Region ▲ (triangle) - Budmash Plant, Pryluky, Chernihiv Region