Sold to me as part of a package deal from a buddy who crashed his P3. This is the foam case from his new P4. I was going to try to modify it for my P3 and made a few cuts into the styrofoam (see photos.) I was going to mod it into a smaller DIY backpack for my P3, but the batteries wouldn't have worked anyway. If this is posted, it's available. Make an offer. Ships from San Francisco Bay Area and open to local pick up, as well. Thanks!