Why, thank you...
Ok. You are crouching behind a wall, and right around the wall is somebody wielding a RF 20. In this situation, if you even slightly show yourself, they can unleash a volley of 10 darts in less than half a second. So, You may also want to combat this with a full-auto weapon, but with the chance that he will find cover, you need something more versatile, for you will need to reload while he has you in the palm of his hand. So, You should have say, a magstrike in one hand, and a NF in the other. You will unleash 10 darts, and if you somehow don't hit him, reload. Magstrikes have clips, which are meant for fast reloading. If you find that he tries to pounce on you, take that accurate NF shot, when he shows himself.