Savai'i Vikings prop Alofaaga Sao, Southern Tornadoes flanker Tofatuimoana Solia and Aana Chiefs wing Johnny Vaili have made the cut after starring in Samoa's local Super 9 competition, while Solia and Vaili also featured on the World Sevens Series.
Head coach Steve Jackson said he was impressed by the talent on show in the local competition.
"I've watched it over the last couple of weeks, the semis and the final and previously a couple of round robin fixtures as well and the quality of rugby over here in that Super 9 competition is quite outstanding," he said.
