dude why ru getting so defensive its just a question and more over the ARX160 is also modular platform highly modular and is also a multicalibur i think u as a defence pro u should be knowing it
ARX 160 is not in the same class as MSBS-5,56, neither it is modular in the same sense as MSBS-5,56, ability to change calliber is nothing special, currently designers at FB "Archer" are focusing on 5,56mm version, later 7,62mm version will be developed and then other optional callibers.
But the main feature is that in one common design we have two rifle designs, classic and bullpup, which makes MSBS-5,56 more attractive to any customer, You can choose one of these, or both but without any logistics nightmare because they use common components.
Let's take for example India, where there are different needs from different branches of the armed forces, that use different assault rifles that use different logistic support. Look how much money is spent on these, how many logistic problems it makes.
And now replace all these rifles with MSBS-5,56, You can have not only weapons in different callibers per needs of different branches of armed forces, but even in two different configurations, classic for most infantry forces, and shorter more compact bullpup for special forces, vehicle crews, rear units.
Only because all the sudden You beloved toy is ARX 160, this does not mean it is better than other assault rifles, neither it makes it little jimmy special.