Greater Manchester Police say the plot could have been "the deadliest terrorist attack in UK history".
Two men have been found guilty of planning a gun attack to cause "untold harm" to the Jewish community in Manchester.
Walid Saadaoui, 38, and Amar Hussein, 52, had a "visceral dislike" of Jewish people and arranged for guns to be smuggled into the UK as part of an "Isis-inspired plot", Preston Crown Court heard.
They believed they were planning the attacks with a third man, known to them as Farouk, who they thought shared their extremist views but was actually an undercover operative.
Greater Manchester Police (GMP) said the main instigator Walid Saadaoui had plotted to carry out what "could potentially have been the deadliest terrorist attack in UK history".
Walid Saadaoui, of Abram in Wigan, and Hussein, of no fixed abode, were found guilty of preparing acts of terrorism between 13 December 2023 and 9 May 2024.
A third man, Saadaoui's younger brother Bilel Saadaoui, 36, has been convicted of failing to disclose information about acts of terrorism.
Walid Saadaoui aimed to smuggle four AK-47 assault rifles, two handguns and 900 rounds of ammunition into the UK.
