I’ve had 3 over the years. Every one of them got sent back
The first one, within half an hour of using it for the first time I had the pistol grip half of the gearbox fall out causing the rest of the replica to hit the ground. If I remember correctly the pot metal had sheered off around where it secured to the upper/rest of the replica
The second one arrived with the metal bent where the stock slotted in which meant you couldn’t attach the stock at all, sent it back and got it replaced and the replacement ended up with the mag tray bending itself from the weight of its own drum mag just from testing it at home
The third one externally was fine, however there was basically no air seal so it was pushing maybe 100 fps so that also got sent back
I gave up after that 😂