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pri forearm
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  1. M16 AR15
    I'm trying to mount the PRI gen 3 hand guard on my mk12 clone. I have an alignment issue when i try to attach the top rail piece (1st pic you can see misalignment of screw holes). The hand guard has two screw points at the 12 o'clock, these are supposed to help secure the top rail (see pics)...
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