I don't own a gen 4, my buddy does, so I don't have direct experience with one other than working with his. Try running some +P ammo through it. The RSAs tend to be a bit on the heavy side. I think the most recent is the 04. If yours doesn't have it I think Glock will send it to you.
Thr +P helps to break in the RSA.
Wait, you have a FDE model. Aren't those only available as a Gen 3?
Last edited by Yankee2718; 10-08-2012 at 22:39..