Although all legacy Q-Gun, S-Gun and T-Gun semi-automatic air-cooled MIG gun part numbers will be affected, you will still be able to place orders using the current part numbering system until August 1, 2014. We will support both styles of part numbering for that period of time only, so we strongly encourage you to begin converting the gun part numbers in your system for the June 2 launch as soon as possible. If you place an order with an old gun part number, we will provide a new number to you via your order confirmation, invoicing and packing slip. We do not anticipate any delays in ordering or shipping products due to this part numbering change.