This has always been a favorite of mine from a design sense. The only weapon we made a rear charging handle, typically seen on AR-15 type weapons. We wanted to ensure that this weapon like the others was easily unmistakable from any other, and once silencers came into the mix, we found that it was often being confused with the Phantom. We leveraged the collapsible stock in this case to shorten the length of the weapon when on the ground to further reduce the scale difference between the two weapons.
Original Concept by Adrian Majkrzak,
Revised by Timur Mutsaev
https://www.artstation.com/timur