One of the first monoplane fighter aircraft with retractable landing gear was the I-16, developed in the N.N. Polikarpov Design Bureau.
The maiden flight was in December 30, 1934.
“Type 10” modification with 4 MG armament and M-25 engine was in production in 1937-1939. It were produced 934 I-16 type 10.
In 1938-1939 some I-16 type 10 Soviet fighters were delivered to China GuomindangAir Force. They served up to 1941.