Koppasus and Kopaska are understood to be armed with the Accuracy International “Arctic Warfare” sniper rifle. In 2018 Accuracy International shared a photo on its Twitter profile of an Indonesian sniper training with an AI AX308, a variant of the Arctic Warfare: https://twitter.com/AccuracyLtd/status/1042398906406068224
Indonesian soldiers have been photographed trainined with US forces in 2013 with an AI Arctic Warfare sniper rifle. Note AI logo on scope: https://media.defense.gov/2013/Jun/19/2001118267/-1/-1/0/436882-E-SPY66-545.jpg
In 2008, Indonesia reported the import of 48 “AW Sniper Rifles” to the UN’s Register of Conventional Arms (UNROCA).