What is the max effective range of the AT-4?

The AT-4, a portable anti-tank weapon, has an effective range of approximately 300 meters (about 980 feet) for engaging armored targets. Its maximum range can extend to around 1,000 meters (about 3,280 feet), but accuracy and effectiveness diminish significantly beyond the effective range. The AT-4 is designed for use against light armor and fortifications in close combat situations.