My understanding of the Apex is that, instead of a bolt with a firing pin (much like a bolt action rifle), which most in-line ML, have, the Apex has a sort of hammer.

My experience is that the actual ignition system in a ML as little effect on the gun' s performance, and each has it' s own advantages and disadvantages. The few post' s I' ve read different message boards about the Apex have be positive.

I wish I could be of more help, but I really believe that a ML is like any other gun and you get one that appeals to you. If you' re interested I' ve got a couple of articles on my site, about getting started in MLing. It' s geared more towards a traditional side, but it might help you out a bit.