Day-fighter variants (MiG-17, MiG-17F) were armed with two 23 mm NR-23 cannons (80 rpg) and one 37 mm N-37 cannon (40 rounds), which were mounted on a common bed under the central air intake. The gun bed could be easily wound down for maintenance. On radar-equipped variants (MiG-17P, MiG-17PF), the 37 mm N-37 was replaced with a third 23 mm NR-23 (carrying 100 rpg) to compensate for the weight aft of the radar. All variants could carry 100 kg (220 lb) bombs on two underwing pylons and some could carry 250 kg (551 lb) bombs; however, these pylons were usually used for 400 l (106 US gal) fuel tanks. The MiG-17R was armed with two 23 mm cannons.
The only variant with air-to-air missiles was the MiG-17PM (or MiG-17PFU), which could carry four K-5 (NATO: AA-1 "Alkali"). It had no cannons. Some countries occasionally modified their MiG-17s to carry unguided rockets or bombs on additional pylons.
The MiG-17P was equipped with the Izumrud-1 (RP-1) radar, while the MiG-17PF was initially fitted with the RP-1 which was later replaced with the Izumrud-5 (RP-5) radar. The MiG-17PM was also equipped with a radar, used to aim its missiles. Other variants had no radar.
Read more about this topic: Mikoyan-Gurevich MiG-17
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