The Mikoyan-Gurevich MiG-21bis (NATO reporting name FISHBED-L) is a single-engine, single-seat, supersonic fighter developed for the Soviet Air Force, and exported to various Warsaw Pact nations. First flown in 1972, the "bis" was the Soviet Union's ultimate development of the MiG-21, and included the Lazur Ground Controlled Intercept (GCI) system, a Tumanskiy R25 turbojet engine and avionics updates. Variants of the bis were produced until 1985. Poland received the MiG-21bis izdeliye 75A in the mid-1970's.
The MiG-21Bis is a relatively inexpensive Polish air superiority fighter available to Polish and REDFOR decks. Armed with four R-60M Molniya fire-and-forget air-to-air missiles and an internal 23mm GSh-23L cannon, the MiG-21Bis is a good option to deal with helicopters and strike aircraft. It has a tight turning radius and high top speed. The type features moderate ECM, which provides a degree of survivability against lower-end long-range missiles, but which is not powerful enough to reliably defeat more advanced Western offerings. The MiG-21Bis provides good capabilities for its cost, and its main drawback is its lack of a long range missile compliment, which leaves the type out-gunned by comparable cost fighters carrying AIM-7 or equivalent missiles.