CREATE TABLE table_12834315_8 (hand_guards VARCHAR, rear_sight VARCHAR, stock VARCHAR)

What kind of hand guards are associated with a rear sight of A1 and stock of A2?
SELECT hand_guards FROM table_12834315_8 WHERE rear_sight = "A1" AND stock = "A2"
SELECT "hand_guards" FROM "table_12834315_8" WHERE "A1" = "rear_sight" AND "A2" = "stock"