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  1. New US Military Battle Rifle Ammo : 6.8 SPC vs 5.56 NATO

    New US Military Battle Rifle Ammo : 6.8 SPC vs 5.56 NATO

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  2. 6.8 SPC vs 5.56: Upgrade Your AR-15 for CQB

    6.8 SPC vs 5.56: Upgrade Your AR-15 for CQB

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