Question: What rifle is the basis for the the magazine-fed, gas-operated semi-automatic rifle designed to be manufactured with the extensive use of aluminum alloys and synthetic materials?
Sentence (from "Leader Dynamics Series T2 MK5"): It was originally a contender for a 5.56 mm Australian military service rifle to replace the then-issued Lithgow L1A1-F1 SLR and Colt M16A1 rifles.
Relevant evidence: No