How to Zero Iron Sights - Sight Calculations Made Simple Feat. Glock 17L
This guide details how to zero iron sights on a pistol, focusing on a Glock 17L. It explains the 'FS4' principle for sight adjustments, the importance of measuring sight radius and deviation, and provides a mathematical method to calculate precise sight corrections for both elevation and windage. The video demonstrates practical techniques using tools like calipers and files for DIY adjustments.











