text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_19901_1 (muzzle_device VARCHAR, colt_model_no VARCHAR)
  ### Question:
  Which muzzle devices are on the Colt 603? 
  ### Answer:
  SELECT muzzle_device FROM table_19901_1 WHERE colt_model_no = "603"