A bolt-action anti-materiel rifle chambered in 20mm, firing explosive-incendiary rounds designed to destroy vehicles, equipment, and light structures at ranges exceeding 2 kilometers. The AMR-14 weighs 25 kilograms and requires a bipod or fixed mounting for accurate fire — this is not a weapon that can be fired from the shoulder. Each round carries enough explosive filler to detonate a vehicle's fuel system, penetrate 30mm of armor plate, or blow a hole through a concrete wall large enough to put a fist through.

Zheng-Dao manufactures the Earthquake for military customers who need to destroy hard targets at extreme range without deploying crew-served weapons or calling for air support. A single operator with an AMR-14 can disable vehicles, destroy communications equipment, detonate ammunition stores, and render defensive positions untenable from a distance where the target cannot effectively respond with small arms. The weapon's report is catastrophic — the 20mm round produces a shockwave that shatters windows within 10 meters of the firing position and announces the shooter's location to everything within a kilometer.

The Earthquake has appeared in GLMZ's inter-corporate conflicts in roles its designers never intended. During the Tier 3 corridor wars, both sides used AMR-14s to fire through building walls at targets in adjacent structures — the 20mm explosive round penetrating exterior walls, interior walls, and anyone in between. The weapon turned entire buildings into kill zones, as occupants discovered that their walls provided no protection against a round designed to destroy vehicles.