HUMAN FACTORS COMPARISON OF THREE TYPES OF SMALL ARMS SIGHTS
FRANKFORD ARSENAL PHILADELPHIA PA
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The report includes a description of the sights and weapons used, the type of lighting and target conditions, range, and the method used for testing. The problems of sight alignment with the short base reflecting tube sight are discussed. A short base reflecting tube sight containing cross hairs, and a short base open notch and blade sight were constructed and mounted on rifles. They were fired for score for a general comparison as against that of a conventional long base peep sight, and to determine which of the short base sights were more effective. Ten subjects fired the short base reflecting tube sight, the short base open notch and blade sight, and a conventional long base peep sight alternately for score under different lighting and target conditions. The extreme spread of the shot groups obtained with each sight and the sight and fire time for each round fired were measured and the data recorded. The conventional long base peep sight showed the best results. The subjects found it difficult to obtain sight alignment with the short base reflecting tube sight. The shot groups and firing times with the short base open notch and blade sight were significantly better than those obtained with the short base reflecting tube sight.
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