Complex sentence: Its long arm gives it the benefit of reducing damage to the main body, especially the operating seat, and 3.5 inch (9 cm) thick bulletproof glass protects the operator from directional mines.
Split into simpler sentences: Its long arms give it the benefit of reducing damage to the main body, especially to the operator's cab. Three inch (9 cm) thick bulletproof glass protects the operator from directional mines.