The L-s9.1 laser cannon was the primary armament on the TIE Advanced v1.[1]
Sources
- Star Wars Helmet Collection: Inquisitor Helmets: The Grand Inquisitor (First mentioned)
- TIE Fighter Owners' Workshop Manual (First identified as L-s9.1 laser cannon)
The L-s9.1 laser cannon was the primary armament on the TIE Advanced v1.[1]