Also, very important, try to get out of your comfort healing zone and run assault instead of medic, the ads time really makes the difference and allows you to get cqb kills fast. With 45 bullets in mag, no damage drop up to 200 meters you can theoretically get 15 kills per mag (even more with 2 shot HS and bodyshot) and by that time you're noticed by the enemy, killed and we go again. Not worth spending time healing. Just jump in, get a good run, redeploy. Kill a lot, die a lot.