![]() ![]() Excess oil will collect foreign matter, which will clog the sight and cause excessive wear. Immediately after cleaning, apply a light film of preservative lubricating oil to all exposed metal surfaces to prevent rusting. ![]() When cleaning, move ramp and aperture slide in order to clean thoroughly under them.ĭ. Use crocus cloth for removal of heavy rust, but since its use produces shine, exercise caution. Remove light rust with preservative lubricating oil. The sight is cleaned best with a small brush and clean cloths. (6) Test aperture and it must move freely up and down the ramp under normal finger pressure.Ĭ. (5) Test rear sight ramp to determine that it traverses completely to left and right without binding. (4) After finishing, thoroughly rinse, dry, and oil the assembly with water displacing oil. ![]() (2) Blow accumulated grit and dust from the assembly with compressed air having a moisture filter. (1) Sand blast the adjustable rear sight assembly, when necessary, using fine grit and a controlled air pressure. To remove corrosion from the rear sight assembly without removing it from the barrel and receiver assembly, proceed as follows: >rKH< ✺Mroyiot MtfNvJM i y 1Mb soiv WMOAdt jiyjwī. The sight should be kept clean and lightly oiled to prevent rusting and insure proper operation. Check machined type sight for loose or missing index plate and screw. As the adjustable rear sight is replaceable only as an assembly, no replacement spare parts are furnished for field repair.
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