The Lahti L-35 is a pistol designed by Aimo Lahti.
Following Finland's independence from Russia in 1917, Finland decided to get rid of its oboslete Russian armament, such as the Nagant M1895, which were replaced with Ruby pistols purchased from France, which were in turn replaced by Luger P08s from the Germans. Finland then opened Sako in 1921 and then VKT in 1929 as it became intent on autonomously producing its own armament. After which, the Finnish Government called for a pistol that could withstand harsh weather. In 1929, Aimo Lahti came up with a design for a pistol which was later patented in 1935. It was originally meant to fire 7.65x21mm Parabellum as well as the 9x19mm Parabellum cartridge, but it was later restricted to 9mm only.
The L-35 is considered well manufactured and finished. While it looks similar to a Luger, it has an entirely different internal setup which seems to be closely related to the one on a Bergmann Model 1896. The weapon was recoil-operated with a concealed hammer, and had a manual safety on the left side of the gun. Stripping the Lahti was impossible without a trained armorer, but repairs were not really needed due to its reliability.
The L-35 also has a bolt accelerator, which would be more common in machine guns than it would be in pistols. This helped to ensure the Lahti's performance during arctic conditions, where a bolt accelerator would normally be used to increase the rate of fire of machine guns.
The Lahti had one major variant, the Husqvarna m/40, with a similar design and firing mechanism. However, the m/40 was nowhere as near as reliable as the original design due to lower quality materials. It did, however, remain in service until the 1980s.