Welcome Loox! @Dennis, I believe the Grendel is based on a 7.62x39 (or a PPC rather) necked to 6.5. The shorter OAL allows use in an AR platform.
Welcome Loox! @Dennis, I believe the Grendel is based on a 7.62x39 (or a PPC rather) necked to 6.5. The shorter OAL allows use in an AR platform.
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