I am sure this has been asked before but does anyone out there know when Glock went to the shinier shot peened finish on the slides??? Older Guns looked like flat paint if you completely dried all the oil off of them but the ones I am talking about still looked wet even when completely dry. I aquired{didnt buy new} a G32 in late 2001 and it was the flat type finish. Every other Glock I have is the new stuff but all my pistols are 3rd gen. Is it correct to say that the new finish is more durable??? I have heard the new finish refered to as Tenifer but Glock says Tenifer is colorless. Were the old style finished guns still tenifer treated??? Thanks in advance for any info. Interesting that this change is not noted in the Ptooma book...or at least if it is I cant find it.