20mm Lahti L39 Antitank Rifle (Shooting & History)
Forgotten Weapons
•
13m
The Lahti L39 was the Finnish answer to the need for an anti-tank rifle, developed just before the Winter War. The rifle was created by noted Finnish designed Aimo Lahti, who had pressed for it to use a 13.2mm cartridge. However, arguments for using a 20x138B cartridge won out, based on hopes to use that cartridge in both antitank and antiaircraft roles, as well as testing that showed the 20mm projectile to have greater terminal effect.
The L39 was not available for use in the Winter War (having been adopted barely 2 months before the Russian attack), but was used extensively in the Continuation War. While improved tank armor quickly became thick enough to protect against the round, it was used for a variety of anti material roles, attacking machine gun positions, bunkers, light vehicles, and more. In 1944, an anti-aircraft version was also produced, firing in full auto and using 15-round magazines.
Today, ammunition is available from a few companies, typically using lathe-turned new cases and surplus 20mm Vulcan projectiles.
Up Next in Forgotten Weapons
-
GX vs GY: What Are the Differences in...
In a last hopeful attempt to get a rifle adopted and produced for the US military, John Pedersen designed his own copy of the M1 Garand rifle in the late 1930s (approximately 1939). His toggle-locked rifles had been irreversibly rejected, and the Garand rifle fully adopted by 1936. Pedersen's exa...
-
Sturmgewehr MP-44 Part II: History & ...
The Sturmgewehr was the result of a German intermediate cartridge development program that began in the mid-1930s. It was sidelined for a period as the focus of German Ordnance shifted to full-power rifles in 8x57mm with telescopic sights, but as the German fighting in Russia became more desperat...
-
Prototype W+F Bern AK44 Copy of the SVT
The Swiss factories of SIG and W+F Bern both produced a remarkable number and variety of experimental self-loading rifles in the 1920s, 30s, 40s, and 50s. Nothing would be adopted by the Swiss military until the StG-57, but these two firms were continuously working to develop a military self-load...
