i think they are fine
but what i would like to change is they reinforcement cost since its bigger than for rifleman
with the current tech costs that could help out a little bit.
Rifles cost 280mp.
Reinforce for 4x28=112mp.
112 is 40% of 280.
Grens cost 240mp.
Reinforce for 3x30=90mp.
90 is 37,5% of 240.
Universal reinforce formula aims to give unit reinforce cost to full for 40% of total worth(less for weapon teams as not all members are combat potent), so following that, grens are slightly underpriced when reinforcing, but that balances out by them having 7 pop instead of 6 for other 240mp units.