American "god of war" in an improved edition

First demonstration by BAE Systems of another already cult version in the US artillery took place on [AUSA 2023](https://defence24.pl/industrial/ausa-2023-armatohaubice-m109a7-with-new-branch). The full modernization focused on the exchange of main arms, which is now the German Rh155 Haubica with a 52 caliber barrel from the Rheinmetall company (identified with the 1 utilized in the PzH 2000). This was the proposal of the BAE Systems as another M109 upgrade, but it was besides speculated about its proposal alongside [the armatohaubic M1299 developed under the ERCA programme](https://defence24.pl/strong-armoured/American-artillery-future-exposed-commentary).