[firemt04]

The Complete Glock Reference Guide by Ptooma is a great book. It is well worth the money.

http://www.topgunsupply.com/the-complete-glock-reference-guide_ptooma_productions-book.html

 

[mickys]

The best source I have found is The Complete Glock Reference Guide. It doesn't have a ton of information on customization, although it does have some. Nevertheless, this book is indispensable if you want to know the ins and outs of Glocks. Have it in your stable if you're thinking of tinkering with your Glock.

http://www.glocktalk.com/forums/showthread.php?t=898008&highlight=glock+reference

 

[mickys]

If I were quicker, that merely would have been a ditto.