Aerospray MG
From Inkipedia, the Splatoon wiki
Aerospray MG (Airspray MG in Japanese) is a shooter weapon, that fires quick bursts, so it's user can cover a relatively large area with ink in a short time. It is also a short range weapon, so it will make quick work of nearby targets. It is in a set with the Seeker and the Inkzooka. To acquire the Aerospray MG, you must beat the OctoWhirl Boss Battle and obtain the Sunken Scroll. Afterwards, bringing it back to Sheldon at Armor Knights and at Level 7, you may purchase this weapon for 4500
