Как нам тут пишут:

A bullpup chassis that is most commonly used on Saiga 12 shotguns, although other AK pattern shotguns and rifles will also fit. Aftermarket parts such as magwells will work but some fitting may be required depending which type you have. Due to the position of the pistol grip because it is a bullpup, loading with longer magazines can be a little tricky since AK’s are rock-and-lock. (GRH)

Взято: ostrich-san.livejournal.com