Check out this video from White Sphere Tactical in doing an upgrade to the AAP-01... "In this video, we walk you through how to change and upgrade the hammer set on your AAP-01 from start to finish.
Whether you're fixing wear issues, improving reliability, or upgrading for stronger performance, this guide covers the full disassembly, installation, and reassembly process so you can get your pistol running smoothly again.

We’ll cover:

• Safe disassembly of the AAP-01 lower
• Removing the original hammer assembly
• Installing the new hammer set correctly
• Common mistakes to avoid
• Function checks before game day
• Tips for improving consistency and trigger response

Perfect for airsoft players looking to upgrade their sidearm for CQB, speedsoft, or general skirmish performance."