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Brand new unfired factory11.5" HK MR556 A4 piston upper kit.Comes with spring and buffer $1850 cash firm.
PLEASE CALL OR TEXT REDACTED/p>
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Listed In: Gun Parts
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Brand new unfired factory11.5" HK MR556 A4 piston upper kit.Comes with spring and buffer $1850 cash firm.
PLEASE CALL OR TEXT REDACTED/p>
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