This is the Synopsis for the Metal CAstings BAA 0001-21. A Formal solicitation will follow. UPDATE 7/1/2021: The purpose of the change is to officially post the BAA for Metal Castings, see attached PDF herein for BAA specifics UPDATE 7/15/2021: The purpose of this change is to post the Questions and Answers submitted in response to BAA 0001-21 posted on 7/1/2021. As a result of the Q&As, the BAA language (the Contract Type Section) has been updated. Please use the BAA provided in this Attachment for responses. To add, the response date established against this posting has been changed since the BAA has a five year Period of Performance beginning 7/1/2021 through 6/30/2026. UPDATE: 7/21/2021: The purpose of this change is to post the Questions and Answers submitted in response to BAA 0001-21 posted on 7/1/2021. As a result of the Q&As, the BAA language (Introduction Section) has been updated. Please use the BAA provided in this Attachment for responses. UPDATE 8/3/2021: The purpose of this change is to post the correction made to Attachment C of the BAA. As a result of the correction, the BAA language (Attachment C) has been updated. Please use the BAA provided in this Attachment for responses. UPDATE 12/20/2021: The purpose of this change is to add applicable Cost Accounting Standards clauses. Please see Amendment 0004 for additional information