[Assault Pioneer]

now before anyone makes the "longer barrel in a more compact gun means it's great everywhere" statement I'm going to clear that up right away.

I'm going to use the Tavor 21 as an example,
the Tar21 was designed for fighting in cqb enviroments and be able to transfer into long range engagements seamlessly (fighting in a farm compound to fighting in he field often the case with the israeli military)

The longer barrel in a more compact weapon is prettymuch the only thing that does carry over from the RS to AS bullpup design yes it is an advantage some times BUT!

in airsoft this only works to an advantage in field games, in cqb it doesn't really matter.
often guns with longer barrels are associated with the field enviroment, with stronger springs and more torquey gearboxes the longer barrel assists in accuracy at long range. here a bullpup has an advantage, more compact, yet same long barrel as lets say an m16.

In airsoft, if your using a gun that was built for the field, in cqb your going to be unessesarily hurting people, if a gun handles well in cqb (ie mp7) it will be underpowered on the field. If it's got the range and accuracy for the field (ie m16) it's going to be shooting hot in cqb enviroments. In real steel the bullpup is supposed to bridge that gap between field and cqb, but because it's airsoft, and we're not killing people we have to watch our fps, fps must abide by the fields rules and the cqb arena's rules.

so the bullpup design, yes with it's compact body and long barrel can thrive in both field and cqb combat, but in airsoft not both at the same time, you'll be shooting too hot or too cold in one or the other, so when you do get a bullpup, just remember the internals are the big deciding factor, is the gearbox for the field? or for the compound?

If you can get a bullpup with a quick spring change system (I don't know if any exist yet) that's the one you should get, so you can change from field to room to room clearing in less than five minutes.