 Despite its wooden construction, it was overweight and underpowered, at one stage 12 LaGG-3s were being completed daily and 6,528 had been built when factory 31 in Tbilisi switched to Yak-3 production in 1944.The prototype of the LaGG-3 was called the I-301 and was designed by Semyon A. Lavochkin, Vladimir P. Gorbunov and Mikhail I. Gudkov.The prototype was later renamed the LaGG-1 and production aircraft were called the LaGG-3.