Negative Airsoft does some internal and cosmetic surgery on the G&G Armament GR25 AEG in this video... "This one came in because although it was firing very well but accuracy was shit with it's R-HOP patch (fucking things) so I fixed that - the rest is a health check & paint job!

It's going to be getting a new barrel & hop unit set up in the next few weeks that will drop the power to around 420fps so that dependant on the site & ammo weight, the barrel can be swapped out to suit."