I brought this awesome gell blaster to school and was apprehended immediately. 10/10 would recommend

A great blaster. Well built, easily upgradable, and good for the price.

The badger seemed to be one of the most convenient rifles from ZHENDUO BLASTER, but unfortunately not for long. Broke now after 3 weeks of casual shootings. Beads getting fed, but there is no pressure on the shot anymore.
Guess now, since the website here does not directly highlight parts of it, I'll have to do some research.
-1 star for durability
-1 star for inconvenience to get / FIND spare parts for it

I get that I am pretty new to the hobby, but I have like 10 blaster here and this one did not outlive some 20$ blaster from amazon (well, it actually did worse than some of them) :(

Can I put a sight on it and if yeah what kind what mm?

It's okay. The performance is pretty good, and it's an extremely faithful replica of the original firearm, which is nice. The problem is that the takedown pins that hold the blaster together are EXTREMELY loose, and are liable to fall off if the blaster is simply bumped against a surface. Easily fixable with a trip to the hardware store, but very frustrating at first.

The blaster did not fully work but the customer service was excellent! They helped me very much awesome work!