diff --git a/src/scripts/game/actions/FireWeaponAction.ts b/src/scripts/game/actions/FireWeaponAction.ts
index ffaeff0..97c7388 100644
--- a/src/scripts/game/actions/FireWeaponAction.ts
+++ b/src/scripts/game/actions/FireWeaponAction.ts
@@ -15,7 +15,7 @@ module SpaceTac.Game {
         }
 
         canBeUsed(battle: Battle, ship: Ship): boolean {
-            return ship.ap_current.current > 0;
+            return ship.ap_current.current >= this.equipment.ap_usage;
         }
 
         checkLocationTarget(battle: Battle, ship: Ship, target: Target): Target {
diff --git a/src/scripts/game/specs/AbstractWeapon.spec.ts b/src/scripts/game/specs/AbstractWeapon.spec.ts
index 886255d..a9cc309 100644
--- a/src/scripts/game/specs/AbstractWeapon.spec.ts
+++ b/src/scripts/game/specs/AbstractWeapon.spec.ts
@@ -34,6 +34,25 @@ module SpaceTac.Game.Specs {
             expect(action.can_target_space).toBe(false);
         });
 
+        it("can't fire without sufficient AP", function () {
+            var ship = new Ship();
+            ship.ap_current.set(3);
+
+            var weapon = new Equipments.AbstractWeapon("Super Fire Weapon", 50);
+
+            weapon.ap_usage = new Range(2);
+            var equipment = weapon.generateFixed(0);
+            expect(equipment.action.canBeUsed(null, ship)).toBe(true);
+
+            weapon.ap_usage = new Range(3);
+            equipment = weapon.generateFixed(0);
+            expect(equipment.action.canBeUsed(null, ship)).toBe(true);
+
+            weapon.ap_usage = new Range(4);
+            equipment = weapon.generateFixed(0);
+            expect(equipment.action.canBeUsed(null, ship)).toBe(false);
+        });
+
         it("can't friendly fire", function () {
             var fleet1 = new Fleet(new Player());
             var fleet2 = new Fleet(new Player());