So I received 2 of the said items today.
External quality of the magazine is rather good.
The opening for the bulb on the magazine is quite big, I am afraid it could in theory get knocked off of its place with enough force.
BB spring is stronger than that of in my old style co2 magazine.
The co2 bulb piercing end seal is NAILON!! I wasted a whole co2 bulb because it didnt seal it pretty much at all.
I am currently working to fix this. I tried to put a o-ring of smaller size between co2 bulb and nailon seal, which worked otherwise perfectly(no hiss when capsule was thightened i