Hop up replacement

[mrpugster]

Hi guys

I recently purchased an HFC T77, basically a long M11A1 however the hopup rubber needs replacing. I've tried finding spares but to no avail, and it seems like the HFC website doesn't exist anymore www.hofeng.com

Next plan is to find a similar hop up, does anyone know of any that are even similar? I've tried getting a KWA M11 hop but were told these are very different. Attached is a pic of the rubber. In the end I may just have to buy several different ones and try to make one fit the best.

Thx