Atlas Custom Works
In Stock Online! Ships Within 1 Business Day!
The Action Army AAP-01 is a popular GBB pistol, and like most stock pistols, it comes with a smooth grip panel that leaves your thumb without a dedicated resting spot. The Atlas Custom Works Thumb Rest adds a contoured surface for your support thumb, giving you a more consistent hold and reducing hand fatigue during long games.
This is a CNC-machined aluminum part weighing 20 grams, so you're not adding noticeable weight to the pistol. The purple finish is cosmetic only — it does not indicate any performance rating or specification. Installation is straightforward: the thumb rest replaces the stock grip panel with basic tools, and no permanent modification to the pistol is required.
Before you buy, confirm your AAP-01 variant. This part fits the standard Action Army AAP-01 GBB platform. If you have a modified or clone frame, check fitment with the manufacturer first.