public class Weapon
{
    public WeaponData data;
    
    public Init(WeaponData data)
    {
      //if you're doing some dependency injection approach
    }
        
    public ShootGrenade()
    {
        if(data.GrenadeComponent.HasGrenade)
        {
            //shoot grenade
        }
    }
}

public class WeaponData
{
    public string WeaponName;
    
    public WeaponStats WeaponStats;
    public GrenadeComponent GrenadeComponent;
    public LaserSightComponent LaserSightComponent;
    
    public struct WeaponStats
    {
        public float WeaponDamage;
        public float Capacity;
    }
    
    public struct GrenadeComponent
    {
        public bool HasGrenade;
        public float GrenadeDamage;
    }
    
    public struct LaserSightComponent
    {
        public bool HasLaserSight;
        public float LaserRange;
    }
}

public class Weapon
{
    public WeaponData data;
    
    public Init(WeaponData data)
    {
      //if you're doing some dependency injection approach
    }
        
    public ShootGrenade()
    {
        if(data.GrenadeComponent.HasGrenade)
        {
            //shoot grenade
        }
    }
}

public class WeaponData
{
    public string WeaponName;
    
    public WeaponStats WeaponStats;
    public GrenadeComponent GrenadeComponent;
    public LaserSightComponent LaserSightComponent;
    
    public struct WeaponStats
    {
        public float WeaponDamage;
        public float Capacity;
    }
    
    public struct GrenadeComponent
    {
        public bool HasGrenade;
        public float GrenadeDamage;
    }
    
    public struct LaserSightComponent
    {
        public bool HasLaserSight;
        public float LaserRange;
    }
}