The SIDAM-25 is built on the M113 tracked chassis and mounts a turret armed with four 25mm Oerlikon KBA autocannons. Each gun carries 150 rounds, allowing the system to deliver dense bursts of fire against low-flying aerial targets.

Unlike many modern air defense vehicles, the SIDAM-25 lacks its own radar. Instead, targeting relies on optical and electro-optical systems supported by a laser rangefinder—a limitation that reduces autonomous detection capability but can still prove effective against slow, low-altitude threats such as loitering munitions.