I understood.
for example, grenadier with 1 lmg42 can fight against rifilemen with 2 bar at long range.
If you want infantry weapons to have a uniform rule, you have to rebalance the data of various infantry weapons, which will be a big undertaking.
Maybe I was not clear enough.
A riflemen can pick a bar so can a Re and they are the same weapon, a Ro.E. can pick a bren and IS also but they are different weapons.
By vet 1 the bar in the hand of Re becomes more powerful than at the hands of Riflemen because they get a accuracy bonus.
All weapon should be the same at hands of mainline infantry better in the hands of elite infantry (have bonuses) and worse at the hands of auxiliary troops.