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Since the weapon is made from fiberglas, which is light weight and it is 78lb, (6 pound) it has good accuracy, yet the defect occurs when a durt or any earth material, enters inside the chamber, it causes jam from the gun, or a weak spring in the magazine can sometimes be a defect, but the main defect, is earth ground material inside the chamber... .-.

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10y ago
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Q: What was the primary mechanical defect with the M16 rifle?
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