In 2012, the G36 was found to suffer from severe accuracy problems when the weapon overheated, which prompted the search for a replacement. In 2017, the "Bundeswehr" launched the "System Sturmgewehr Bundeswehr", a program to find a replacement for the G36. The weapons put forth were the Heckler & Koch HK416, Heckler & Koch HK433, and the Haenel MK 556. Due to legal issues surrounding claims of Haenel engaging in patent infringement, the program has been put on hold, and no replacement has been adopted.