tree_view_ref = self.env.ref('module_name.tree_view_id', False)
form_view_ref = self.env.ref('module_name.form_view_id', False)
return {
    'name': "Name of Action",
    'view_mode': 'tree, form',
    'view_id': False,
    'view_type': 'form',
    'res_model': 'your.model',
    'type': 'ir.actions.act_window',
    'target': 'current',
    'domain': "[('id', 'in', %s)]" % record_set,
    'views': [(tree_view_ref and tree_view_ref.id or False, 'tree'),
              (form_view_ref and form_view_ref.id or False, 'form')],
    'context': {}
}