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will this work in my sig m4 5.56? — 1 Answer

by gabe v, from CO, United States Asked on July 28, 2019

Name American Built Arms Company PRO 5.56 Bolt Carrier Group (BCG) (4.9)
$192.00 $179.99 Save $12.01
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Answered by Robert G., Gear Expert, from IL, United States, on October 04, 2019

Please email us at techsales@opticsplanet.com with the full make and model of your firearm as Sig Sauer has certain models these are not compatible with.

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