New gen 3s have the problem as well, it's not just a gen 4 problem.
Oh yeah, and:
http://thebestpageintheuniverse.net/c.cgi?u=epic
New gen 3s have the problem as well, it's not just a gen 4 problem.You are not doing anything wrong do some reading and you will see that glock epic failed on the 9mm gen 4 guns. They have since come out with a replacment spring and ejector that they can install for you just give them a call.