The Sixth Gun Companion contains the following pieces:
‘Neath the Gallows Tree, a Tall Tale of The Sixth Gun written by Scott Woodard, which contains 6 pages of additional comic material from Cullen Bunn and Brian Hurtt!
Creature Feature: Griselda the Grey Witch,
Creature Feature: The Great Wyrms,
Fractured Frontiers: a Savage Tale of Deadlands and The Sixth Gun,
Pre-Generated Characters, a set of Six characters ready to play in the world of The Sixth Gun RPG.