RT-20

The RT-20 was developed in Croatia during the 1990s for anti-materiel use against equipment, light armour, and protected positions. Its name is commonly expanded from Croatian wording meaning a hand cannon of 20 mm calibre, which accurately reflects its unusual scale. The weapon belongs to a small group of rifles that push beyond .50 BMG into cannon-calibre ammunition, trading portability and firing comfort for exceptional terminal effect.

Technically, the RT-20 is a single-shot bullpup anti-materiel rifle chambered for 20x110 mm Hispano ammunition. Because that cartridge produces far more recoil than typical sniper-rifle ammunition, the weapon uses a prominent over-barrel recoil-management tube that vents gases rearward. This design makes the rifle more usable but also creates a dangerous backblast area and requires disciplined firing procedures.

Operationally, the RT-20 is best viewed as a specialist anti-materiel system rather than a general sniper rifle. It can threaten light vehicles, communications gear, unexploded ordnance, aircraft on the ground, and hard cover, but its bulk and firing signature limit tactical flexibility. It is most useful when a small team needs a portable weapon with more destructive effect than .50-calibre rifles can provide.