正翻译步骤 2
步骤 2


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After the takedown pin is out of the way, slide the upper receiver forward. You will notice that the charging handle will get caught on a small nub on the top of the gearbox. Simply pull the charging handle back slightly and lift it over the nub.
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Continue to pull the upper receiver forward until the two halves separate. Do not yank on the wires too hard if they get stuck, just gently guide them out.