diff --git a/migrations/20131217_unearned_backer_gear.js b/migrations/20131217_unearned_backer_gear.js
new file mode 100644
index 0000000000..2c1baf9dc7
--- /dev/null
+++ b/migrations/20131217_unearned_backer_gear.js
@@ -0,0 +1,20 @@
+var query = {
+  '$or': [
+    {'items.gear.owned.weapon_special_0': true},
+    {'items.gear.owned.armor_special_0': true},
+    {'items.gear.owned.head_special_0': true},
+    {'items.gear.owned.shield_special_0': true}
+  ]
+};
+
+db.users.find(query, {'items.gear.owned':1,backer:1}).forEach(function(user){
+  var owned = user.items.gear.owned;
+  var tier = (user.backer && user.backer.tier) || 0;
+  if (tier < 70) delete owned.weapon_special_0;
+  if (tier < 45) delete owned.armor_special_0;
+  if (tier < 45) delete owned.head_special_0;
+  if (tier < 45) delete owned.shield_special_0;
+
+
+  db.users.update({_id:user._id}, {$set:{'items.gear.owned':owned}});
+});