Australian EF88 (Enhanced F88) / F90 — Thales Australia upgrade of the Steyr AUG for the Australian Army. Full-length Picatinny top rail, M-LOK handguard, integrated 40mm grenade launcher provision. Replaced the F88 Austeyr. The most modern AUG-derived service rifle. Type: Rifle Action: Gas-Operated Caliber: 5.56x45mm NATO Capacity: 10 Year introduced: 2016, Australia Weight: 104 oz Overall length: 43.5" Status: Active Military use: Yes Intended use: military