Complex sentence: RT-20 is an acronym of the Croatian word Ručni Top 20 ("Hand Cannon, 20mm"), and it is an anti-material and anti-armor sniper rifle developed in Croatia in the 1990s.
Split into simpler sentences: RT-20 is an acronym of the Croatian word Ručni Top 20 ("Hand Cannon, 20mm"). It is an anti-material and anti-armor sniper rifle developed in Croatia in the 1990s.