Have both 5.56 and 300 BLK uppers?

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ron
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Have both 5.56 and 300 BLK uppers?

Post by ron » Sat Dec 03, 2016 11:55 am

Whatever you do, don't mix up your ammo. This can not happen with ALL 300 AAC/Blackout ammo, but it can happen with some. It depends on the nose profile of the projectile and the seating depth and the crimp but it CAN happen. And what CAN go wrong, WILL go wrong.

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Re: Have both 5.56 and 300 BLK uppers?

Post by edzz » Sat Dec 03, 2016 10:39 pm

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