The twist rate of the barrel in 5.56 NATO is 1:7, right hand.
The twist rate of the barrel in 300 AAC "Blackout" is 1:7, right hand.
Modified on: Thu, 21 Apr, 2022 at 1:22 PM
The twist rate of the barrel in 5.56 NATO is 1:7, right hand.
The twist rate of the barrel in 300 AAC "Blackout" is 1:7, right hand.
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