LEGO has designed a set, 75313 AT-AT, that has some sub-assemblies which cannot be dismantled without using sharp metal implements, going against the traditional LEGO principle of being able to take apart and rebuild models. This issue has been discovered in the set's Technic frames and axles. The problem is seen as a disappointment and a potential oversight in the design process. The set's design has sparked a discussion about the company's focus on creating display pieces rather than playable models.