waveone

I have read so much about the M4 it makes me wonder if my m3 is essentially obsolete. One is inertia while the other is time tested gas driven. THough I have never had a problem w/ mine it illicits questions. What are the advantages of the M4 over the M3? Does anyone know a source for a mag extension tube for an m3? thanks

Hey guys, I have an M3S90 that I ordered w/ the ghost ring sights. It has the pistol grip on it and cycles like a champ. However I was wondering about two things: Where can I buy the after- mkt mag extension? How feasible is it to replace the conventional stock w/ a folding stock like on the M4 and where is a source for these components? Great site! thanks