4 books in series

Osprey Weapons

Osprey Weapons is a 4-book series with 4 released primary works first released in 2006 with contributions by Sean McLachlan, Chris McNab, and Leroy Thompson.

Medieval Handgonnes: The first black powder infantry weapons
MG 34 and MG 42 Machine Guns
The Sten Gun
The M14 Battle Rifle