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How a Lahti L-35 works
The Lahti L-35 is a semi-automatic pistol designed by Aimo Lahti that was produced between 1935 and 1952. Designed to be manufactured autonomously in Finland, the pistol was used by Finland throughout the Winter War and Continuation War. Considered to be of high quality, the Lahti was well manufactured and worked reliably in cold conditions or when fouled. The use of a bolt accelerator, an uncommon feature in a pistol, helped make the Lahti a reliable pistol.
A Swedish copy of the L-35 Lahti, the Husqvarna m/40, saw extensive service with the Swedish military until the 1980s. The m/40s had similar design and firing mechanisms to the Finnish L-35s but suffered lower reliability from the lower quality steel used in manufacturing.
The M1935 Lahti is considered well manufactured and finished. Although the Lahti is outwardly similar to the P08 Luger, the firing mechanism is significantly different and more closely related to the Bergmann–Bayard pistol. The Lahti is a recoil operated, single-action, locked breech firearm fitted with a concealed hammer. The pistol itself is well sealed from dirt and ice but is heavy by modern standards. A manual safety was provided by a lever on the left-hand side of the pistol. It is impossible to strip and clean the Lahti without a trained armourer or access to a workshop but the need for repairs in the field was uncommon because of the Lahti's reliable design.