Complex sentence: It is configured in a bullpup layout for increased portability and balance; the grip is displaced forward, making the assault rifle compact, suitable for concealed carrying and so well balanced that it can be fired using just one hand--like a pistol.
Split into simpler sentences: It is configured in a bullpup layout for increased portability and balance. The grip is displaced forward, making the assault rifle compact, suitable for concealed carrying and so well balanced that it can be fired using just one hand, like a pistol.