The militants along with the linkmen laid down arms before Tinsukia district Deputy Commissioner S S Meenakshi Sunderam, district superintendent of police P P Singh and DIG upper Assam Satyen Gogoi.
They deposited four AK-81 assault rifles with four magazines, one G-2 self-loading rifle (SLR) with three magazines, two 7.65 pistols, seven Chinese grenades, half kg TNT explosives and two mobiles.
The eight ultras are Monoranjan Gogoi, Dipen Saikia, Manik Dohotia, Jayanta Saikia, Bulon Moran, Rantu Moran, Nizu Gohain and Hemkanta Changmai.
The link men have been identified as Dhavania Saikia, Dharmen Sonowal and Raju Moran.