Who are all the major users of the Gordon Close-Support Weapon System?
CREATE TABLE "table1_29474407_11" (
  "name_designation" text,
  "year_of_intro" real,
  "country_of_origin" text,
  "primary_cartridge" text,
  "major_users" text
);
SELECT "major_users" FROM "table1_29474407_11" WHERE "name_designation"='Gordon Close-Support Weapon System';