LR-PGK is a guidance kit which increases the accuracy of conventional 155 millimetres artillery rounds. The system consists GPS sensor and corrects flight trajectory via a moving aerodynamic control interface. The system is suitable for both old and new projectiles. Rounds fitted with LR-PGK provide artillery units in battle with accurate fire support capabilities that friendly forces can rely on in areas where collateral damage is a concern, resulting in improved accuracy against modern threats, and reduced Circular Error of Probability (CEP). The guidance, navigation, and control architecture provides anti-jam performance and achieves precision strikes at extended ranges.