According to Wikipedia: "BTR-82A - latest production version with improved armour, spall liners, more modern night vision device TKN-4GA-02, 30mm gun 2A72, GLONASS navigation system and a more powerful engine of 300 hp. The prototype of the BTR-82A was shown for the first time in November 2009. The Ministry of Defense of Russia has formally adopted at the armament armored personnel carrier BTR-82A. The corresponding order was signed by Defense Minister Sergey Shoygu in early 2013. BTR-82A is equipped with 30 mm 2A72 cannon and is a modernized version of armored personnel carrier BTR-80, standing in service since 1986."