Complex sentence: BTR-80 Joker (БТР-80 "Джокер") is a Ukrainian modification to the BTR-80 armored personnel carrier that was developed by the National Guard of Ukraine that features slat armor and is armed with four SPG-9 recoilless rifles.
Split into simpler sentences: BTR-80 Joker (БТР-80 "Джокер") is a Ukrainian modification to the BTR-80 armored personnel carrier. The vehicle features slat armor and is armed with four SPG-9 recoilless rifles.