
With the BCM . M4 upper receiver, Alpha Shooting Sports 5.56 barrel and Midwest Industries 15 handguard.
Updated
first build. BCM upper PSA lower. lightweight next on the list is a optic

With the BCM . M4 upper receiver, Alpha Shooting Sports 5.56 barrel and Midwest Industries 15 handguard.
Updated
first build. BCM upper PSA lower. lightweight next on the list is a optic

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