F1 submachine gunとは 意味・読み方・使い方

The 9 mm F1 was a standard Australian submachine gun manufactured by the Lithgow Small Arms Factory. First issued to Australian troops in July 1963, it replaced the Owen machine carbine. The F1 was retired in the early 1990s and replaced by the F88C Austeyr, an Australian-built version of the Steyr AUG rifle with slight modifications. The F1 had a robust and simple design and proved useful in close-quarter fighting during the Vietnam War.