ocean374
ocean374 02 Jul 2020
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Another upper 300 blackout 馃憤

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NC Gun Guy
NC Gun Guy 4 months ago

It should work with standard 223/556 mags but mine is sometimes finicky with the ammo In standard mags. Magpul makes one just for the 300 blackout. Has a different follower. Work great with anything round I put in them.

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