Erik Lawrence & Mike Pannone 
Glock Handbook [EPUB ebook] 

The handy to carry and use handbook of pistol knowledge for all owners/users of the Glock system. Written by two Special Forces instructors this handbook includes decades of knowledge of this weapon system. The most up-to-date explanation of the proper corrections to common malfunctions and how to ensure they don’t happen in the future. Maintenance, inspection, and training tips.