maverick0

You are correct. I used to play with some experienced players and we won't waste ammunition. More often than not the 190 magazine was sufficient. Seldom have to reload with the 300 one.

Anyway, what I want to say is this M4 has the potential of becoming an interesting (and usable) sniper rifle. Testing it at home against a 6m target, I could virtually hit the same spot at semi auto if I aim carefuly (i.e. grouping less than 1cm). It is no big deal for an AEG but a huge improvement against many other gas rifles you could buy today. Only thing I have done is changing the original outer barrel with a steel one and tightening the inner/outer barrel a bit.

If you play with a team with limit on firepower like original power (marui) or 1J  for AEG (full auto), snipers may use higher power ones with limit on ammunition (low cap) or semi auto. I used to play reasonable comfortably with a bolt gun against AEG with my old team. I believe that this rifle could fit comfortably into that role.