C-Clip for sunnysky motors

[wanna_be_pilot]

Hi!

I recently had to open up my sunnysky motors and in the process i kinda broke the circlip.

As such, i am looking for M3.5 C-clip/circlip. I ave called up rotor hobby but they have M4 or M2.5 only.
Is there any other place you guys know off where i can buy these C-clips.