| 41. | It commonly has a fixed front sight and a rear sight with no retaining screw.
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| 42. | The rear sight could also be adjusted for windage.
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| 43. | The rear sight is graduated from in increments.
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| 44. | The 1903 rifle included a rear sight leaf that could be used to adjust for elevation.
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| 45. | The T65 design replaced the carrying handle of M16 pattern rifles with a rear sight block.
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| 46. | The rear sight was improved, and the receiver was shortened to create the model 1870 receiver.
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| 47. | The rear sight assembly, forward handguard and receiver dust cover were all retained from the RPK.
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| 48. | A drift-adjustable rear sight had range-hashmarks in micrometers.
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| 49. | With a hand adjustable elevation screw the rear sight can be adjusted for bullet drop in increments.
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| 50. | The rear sight was also modified.
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