The bear proof extracto is on my short list.
What are the advantages to the one piece firing pin in the Marlins?
I believe the 2 piece is mainly in the model 94 but I thought I read somewhere it may have been used in the 95. Anyway they apparently like to break. If it was used in the 95 I may replace it.
A lot of info on these forums
http://www.marlinowners.com/