The M/39, nicknamed the Ukko-Pekka ("Old Man Pekka" in Finnish) after former Finnish president Pehr "Ukko-Pekka" Svinhufvud, was a complex modification of the Soviet Mosin-Nagant bolt-action rifle, and the standard rifle of the Finnish Army during the Continuation War.
The M/39, nicknamed the Ukko-Pekka ("Old Man Pekka" in Finnish) after former Finnish president Pehr "Ukko-Pekka" Svinhufvud, was a complex modification of the Soviet Mosin-Nagant bolt-action rifle, and the standard rifle of the Finnish Army during the Continuation War.