This AR-15 Bolt Action Style Builders Kit includes Receiver and Bolt carrier group (BCG) combo will work with any mil-spec 6mm ARC or 22 arc barrel. If using a barrel that is ported you will need to use the gas barrel sleeve (included) or turn the gas block backwards to cover the port.
AR15 6mm ARC & .22 ARC Upper Receiver Bolt Action
SKU: URBCG-6MMA-BAS
Price
$186.99
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