Anelaid said: All of those weapons are in Bf3, not sure if this is a reference to battlefield 3 though.
It's not in the tag of the original strip on Pixiv, but Zuizou-sensei commented "BF3がおもしろくて。" (BF3 sure is fun.) So yeah, this should definitely be tagged Battlefield 3, and screw heavy firearms! All I need is a Keine Stick!!
The Story So Far ⇨ Reimu tried to eat goat-butter rice porridge and a chocolate-chip-covered Marisa.Then I used this on a Humvee...Submachine GunAnd, this one is a "Keine Stick".Assault RifleRocket LauncherOoh...ShotgunWahahaIt's not meant for such use.Sniper RifleGeez...