I think btc-e.com exchange is also offering bitcoin trading on MT4 platform with 1:3 leverage
btc-e is colaboration and use system in fxopen
is real bitcoin trading in metatrader 4
1 fxopen
2 justforex
3 my.myfxchoice.com
4 simplefx
if you want high leverage
but much people bitcoiner not recomended you can try in instaforex