|XB-81 Tau Accelerator|
|Type||Experimental, handheld tau particle accelerator|
|Place of origin||Harbitros|
|In service||2081 to present|
|Used by||Harbian Eclipse Agency|
|Designed||2077 to present|
|Number Built||2 (as of 2085)|
In 2083, the tau cannon was tested during Operation Black Deluge and was used against Eor Stragsden, Glade Sunderval, and Brett Colgreave. However, it was destroyed from being in its own proximity when its beam struck Colgreave. After its destruction and successful test run, Project Prismbeam and Casanovus Incorporated made plans to create more.
A second one, with several minor improvements, was finished in 2085.