The F1 is an evolution of the Owen SMG, designed and produced by the Lithgow Small Arms Factory. It is essentially an Owen Gun that utilises some components of the L1A1 Self-Loading Rifle, which was the standard issue battle rifle of the Federal Army. This allowed Lithgow to make production of its SMGs faster, cheaper and more streamlined. Despite the appearance and acquisition of modern assault rifles such as the AKM in the Oceanykan People's Army, the F1 is still produced and issued.