Night Pitchfork. The red text effect says "Mainstream'd!" Borderlands 2 Red Text Sniper Rifle

"Mainstream'd!" is a red text modifier on weapons in Borderlands 2

Found on the following red text weapon: Night Pitchfork (or any other Pitchfork Sniper Rifles), which you can get off Terramorphous in Terramorphous Peak

Grants Weapon Effects[edit]

While zoomed, fires burst shot in a pitchfork-like horizontal spread with 5 lines