Sir Ejarok

If someone already suggested this, TL;DR. I want an explosive warhead part, like a 2.5 meter piece that explodes on impact. Oh, and make a nuclear one. >

Romfarer/anyonewillingtoanswer, quick question + suggestion... Is there a way to fire missiles rapidly without destroying my space bar? Like a Lazor System section that would activate certain things rapidly or at a certain time/place. Example: point at orbital debris and activate X missile at 30,000 m. above Kerbin. (Is this a MechJeb thing? If not, Romfarer, can you add it? MechJeb is lethal to my PC...)