The defining feature of the 9th Edition Codex was the ability. This granted every Astra Militarum unit a free automatic hit on a roll of 6 for ranged attacks (and melee for certain units like Rough Riders).
However, you can still find "NIB" (New in Box) or used copies via: 9th Edition Astra Militarum Codex Pdf
For official rules updates and balance changes, players can refer to the Warhammer Community FAQ page for the most recent errata. The defining feature of the 9th Edition Codex
The 9th Edition Astra Militarum Codex also provides guidance on strategies and tactics, including: 9th Edition Astra Militarum Codex Pdf
