# Sandbox.BaseWeaponModel.DoTracerEffect

```csharp
void DoTracerEffect(Vector3 hitPoint, System.Nullable<Vector3> origin = null)
```

### Parameters

- `hitPoint` (`Vector3`)
- `origin` (`System.Nullable<Vector3>`), default `null`

Declared in [Sandbox.BaseWeaponModel](/api/Sandbox.BaseWeaponModel).
Assembly: `Sandbox.Engine`.