While it appeared in TCW, its name and all other info about it came from a Legends episode guide released in 2013. This makes the pistol nameless and therefore non-notable in Canon, which is why it doesn't have a Canon article.
^ Exactly. The notability policies for objects are even stricter than the ones for characters so that we don't end up with a thousand articles called "Unidentified blaster pistol model (Pantora)" or whatever that wouldn't really contain any information.