No need to be sorry Liewe. That is very helpful. Thank you very much (check your UserCP). Basically the same rules as SMG anyway.
You guessed right - I was using the Garand - 5 shots. With so many good players moving so fast, it is not very easy to get 5 consecutive shots though

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I'll test the karabiner soon.
p/s It was up earlier about 9.30. There was me, Hooblue, DarkCabo (I think), Boutify (I think) and a few others. about 4 vs 4 - Sewers.