This is a prototype project opportunity for 155mm Modular Artillery for Combat Effectiveness (MACE). The full purchase description and packing/unitization drawings are restricted and will only be provided to offerors upon request. To request these attachments, an offeror must complete and submit a Technical Data Request Questionnaire, a Non-Disclosure and Non-US Agreement, and a DD2345 Military Critical Technical Data Agreement for contracting approval. Further instructions are outlined in section 8 of the Prototype Project Opportunity Notice (PPON). No budget, performance location, or submission timeline details are specified in this description.