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.450 Bushmaster AR-15 Bolt Carrier Groups

.450 Bushmaster BCGs have a wide bolt face, and will usually require a heavier buffer to cycle properly.

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Bear Creek Arsenal .458 SOCOM / .450 Bushmaster AR-15 Bolt Carrier Group – Nitride
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$68.99
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Faxon Firearms 458 Socom/450 Bushmaster Bolt Carrier Group – Black Nitride
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$161.00
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