For a soldier, is there any personal gesture heavier than giving one's own standard-issue firearm to someone else? There is none, absolutely none.
Peter held the pistol out in front of Gao Yang, but after a glance, Gao Yang immediately shook his head and said, "I don't want it, you keep it for yourself. Just get me a new one next time."
Peter's pistol showed clear signs of use, indicating that it was his regularly carried standard-issue sidearm, not one temporarily picked up for a mission.
Gao Yang would never give his pistol to anyone, absolutely not. Unless he was dead and his pistol taken from him, at least before his death, he would not give his pistol to anyone.