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_name_47 (muzzle_device VARCHAR, barrel_twist VARCHAR, stock VARCHAR)

### Question ###
What is the muzzle device with a 1:7 barrel twist and a stock 4th generation?

### Accurate SQL ###

SELECT muzzle_device FROM table_name_47 WHERE barrel_twist = "1:7" AND stock = "4th generation"