Well-known brand Revell has been long in business and are still popular with their model kits. It is now expresses regret for the Nazi UFO Haunebu II product and will pull it down from stores shortly.
The model is based on a theory that Hitler build a technology that emulates UFO technology. Revell thinks that the vehicle is only fictional and nazi-themed and makes it clear that this military flying saucer never existed in the first place and that it takes the image from the company down.
Nobody knows the source of the criticism but Revell decided to stop production of the model kit entirely and apologised.