Just got an American tactical import hybrid chambered in 300 blackout and the bolt isn't closing all the way it seems. They sent a standard AR mag (5.56) it says on the mag. I did shoot yesterday and It would shoot every other one. I'd have to eject the next live round then it would shoot. I kept repeating it and it would shoot every other one. Would I need to get a mag for 300 blackout? Or is it the gun?

Question

Just got an American tactical import hybrid chambered in 300 blackout and the bolt isn't closing all the way it seems. They sent a standard AR mag (5.56) it says on the mag. I did shoot yesterday and It would shoot every other one.  I'd have to eject the next live round then it would shoot. I kept repeating it and it would shoot every other one. Would I need to get a mag for 300 blackout? Or is it the gun?

Ed C. · Answer

Bradley, the 300 Blackout uses standard AR magazines, so I doubt that is the problem, but it is possible.  By chance, have you tried another magazine? 
I would call ATI for advice on how to proceed 1-800-290-0065  Option 3
Or contact via the web site here >>> https://americantactical.us/contact-us
Good luck, stay safe, & have a great day!

James G. · Answer

Hi Bradley and welcome. I would try s 300BLK marked magazine first and call ATI Customer Service afterwards if the same issue. 300BLK magazine here : https://www.budsgunshop.com/product_info.php/products_id/114333/magpul+pmag+m3+300black+30rd+black

Jason L. · Answer

As mentioned below, I'd try a different magazine specifically for 300 BO, if the issue persists, then I'd give ATI a call at 1-800-290-0065.

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