The ArMek corporation manufactured the SW-4 ion cannon, a type of ion cannon. It was installed within a revolving turret positioned on the BTL-A4 Y-wing assault starfighter/bombers's upper surface.
- Star Wars: Build the Millennium Falcon 19 (Starship Fact File: Koensayr BTL-B Y-Wing Fighter-Bomber)
- Star Wars: Card Trader (Set: Blueprints, Card: Y-wing Starfighter) (First mentioned)
- Star Wars Helmet Collection 76 (Databank A-Z: Xev Xrexus–Yavin 4)
- Rebel Starfighters Owners' Workshop Manual
- " Republic, Rebel, and Resistance Starfighters " — Star Wars Encyclopedia