Grenade Launcher Attachment and Austeyr trials July 7, 2015 at: 1200 × 899 In: ADF set for 30,000 EF88 rifles Next → Private Jackson Bartlett from the 5th Battalion Royal Australian Regiment pulls the newly position trigger on the new Grenade Launcher Attachment (GLA) on an EF88 Austeyr weapon at Kangaroo Flats firing range, outside of Darwin.