What hand guard system is used with a gas piston commando?
CREATE TABLE table_12834315_5 (hand_guards VARCHAR, name VARCHAR)
SELECT hand_guards FROM table_12834315_5 WHERE name = "Gas Piston Commando"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_12834315_5 (hand_guards VARCHAR, name VARCHAR) Question: What hand guard system is used with a gas piston commando? [/INST] SELECT hand_guards FROM table_12834315_5 WHERE name = "Gas Piston Commando" </s>