Just picked up a 945-1 (170173: 5"2-tone) & have a couple questions.

Mine has Wilson Combat sights & card board box with a soft black nylon Performance Center zipper pouch in lieu of Bo-Mars & locking aluminum case (as "THE" book suggests).... was this due to it being a later mfg gun? The fired case envelope indicates mid 2005 mfg. Were all the "re-issueguns" from '05 sent with the same?

And magazines: I have maybe (8) 645 mags I picked up as police surplus years ago. The only difference I can see is the location of the mag release slot. I have access to a mill. If I mill a second mag release slot in the correct location, will there be any other problems using those mags? Any other frugal people done this?