Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_12834315_4 (barrel_twist VARCHAR, colt_model_no VARCHAR)

### Question ###
Name the barrel twist for colt model mt6400

### Accurate SQL ###

SELECT barrel_twist FROM table_12834315_4 WHERE colt_model_no = "MT6400"