Just a quick note: I bought this hopper yesterday for my A5. No biggies here as it just hold balls like any $3 hopper. This is important for some; You'll need an offset mount for sure if you are mounting optics to the stock A5's weaver rail. The stock hopper has enough room to squeeze a 30-40mm red dot on there but it is impossible to do with this hopper.
Higher capacity. A bit less of a target from the front but it invades the sighting line from the top more so then the stock hopper