How to draw Firearms Sketchbook

Live drawing of guns in my firearms sketchbook, and talking about firearms drawing theory.
Links of materials mentioned in video:

Sketchbook Tour: https://youtu.be/9Bg2Xj7s39s
World of Guns game: https://store.steampowered.com/app/262410/World_of_Guns_Gun_Disassembly/

Movies firearm database: http://www.imfdb.org/wiki/Red_Dead_Redemption_II

Gene Bond