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_8 ( barrel_length VARCHAR, rear_sight VARCHAR, barrel_profile VARCHAR )

### Question ###
How many inches is the barrel length when the rear sight is weaver and the barrel profile is A2?

### Accurate SQL ###

SELECT barrel_length FROM table_12834315_8 WHERE rear_sight = "Weaver" AND barrel_profile = "A2"