GoPro Hero3+ black HD lens modification

[historymaker06]

I had an accident yesterday with my Phantom2. A USA Flag knock down my Phantom, now i got a broken 3D Gimbal and broken Gopro Hero3, but i got the shot. Watch the video here.
https://www.youtube.com/watch?v=-UY9Spi ... e=youtu.be

My 3D gimbal is gone and needs to be replace.
My Gopro Hero 3 + Black is still working, just the lens glass broke off.
See attach picture.
I need to replace the Gopro Stock lens.
Any ideas? Comments or suggestions.
I saw some options but i don't want to spend $100+ for a lens.
I am looking for a 4mm decent lens for under $100.

 

[andysydney]

I have not bought anything here, but they are more reasonable than Ragecam.

http://peauproductions.com/store/index. ... 24_126_127

If anybody has had any experience with PeauProductions, I would like to hear about it.

 

[IrishSights]

Its quite job taking it apart. There are several utubes on it. Its basically a full tear down. The Hero+ black on the other hand is a piece of cake. If it was me I'd buy from china and pay for dhl, it is buckets cheaper than buying from the above mentioned

Edit: the hero lens thread is the same as many cctv lenses. You can get a 5.4mm flat field lens for £70 GBP compared to US sources at £200 GBP. That will give you an idea of the price difference.

 

[SanCap]

Did you tear the flag?