TAM 4 is not a substitute for the TAM 2C. TAM 4 would be 8.7 at most.
We need to look for another alternative. Does Switzerland have any LT at 10.0?
Spoiler
As I have said several times, the first TAM A (TH301 early) could be 8.3 (semi-stabilized, Marder engine, worse optics) and the TAM 4 (TH301 late) could be 8.7 since, compared to the standard TAM, it only adds NVD for the commander and gunner, the rest is cosmetic.
The 120mm TAM 4 could be at most 9.0. It would use the same ammunition as the L1 L/44 but does not have TVD. There is only one source indicating that a prototype was built.
In case of stable financing, 22 new fighters can be adopted by the Swiss Air Force by 2017. SAAB (JAS-39 Gripen NG), Dassault Aviation (Rafale), and Eurofighter (EF-2000 Typhoon) companies applied for the supply of new aircraft to the Swiss Air Force. These aircraft were tested and evaluated during 2008-2009, but the decision on choosing a supplier was postponed to the end of 2011.
Yes the Wiesel can’t use the UTM-800 bc basically the system is too big for it but the ATM was a perfect match, 360 degrees and can fire both HOT2s and 3s