AR-15 still not used to those neural upgrades

M4 gripping the magwell when she has a perfectly good vert grip smh

And like 80% of AR-15s gun is MIA.

M4 probably took it all for "padding"

b o n k

^^Actually, the small carbine shown in this doujin is ST AR-15's second gun. Yes, she got second gun as Mod III.
Her first gun is Spikes Tactical 10th Anniversary AR-15, a full size rifle with 406 mm (16 inch) barrel. And her second gun is Spikes Tactical Pipe Hitters SBR, carbine with 206 mm (8.1 inch) barrel.