This book covers the British rifle that collectors have come to call the "Jungle Carbine" - the Lee Enfield Number 5 Mark 1. The work focuses on the Mark 1 model and its variant parts, the never-issued Mark 2 version, the grenade-firing model, and contemporary competitors from Commonwealth countries.

The book also provides a general history of the rifles, and as well as a chapter on the problem of the "wandering zero." 15 photographs.