Simon Spurrier 
Six-Gun Gorilla #2 [EPUB ebook] 

Lost in the psychedelic warzone of the Blister, Blue is saved by a mysterious, other- worldly creature — 6GG, a genetically modified silverback gorilla with two enormous six-shooters. Now, with the Rebel War Party, pedal-bike bandits, and Blue’s own army (the BXF) on their trail, the odd couple must make their way through the wilderness of this strange land on a quest of steel, blood, and thunder.