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Sig MPX owners...Step inside


Erik88

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I'm wondering if anyone has experienced the same issue I've had. When trying to chamber a round from a fully loaded 30 rd magazine I'm finding that the bolt doesn't go completely forward like it should. If I try using the bolt release it will get hung up just about every time. If I do the slingshot method using the charging handle it will work correctly but only if I really let it rip.

Anyone else experiencing this? I really don't think I would trust this gun if I had to do a defensive reload. Other than this issue it feeds all types of ammo without fail

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My mags were REALLY tight when new. Took several range trips before they would seat and the bolt would close 100% on a full mag. Now that I've got around 2k rounds through it all seem to have cleared up. Of my 10 mags it was worse with 4-5 of them than the others, I chalked this up to the others having been loaded/unloaded a few more times while I waited for the rest to come in.

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  • 4 weeks later...

I'm still having the same issue on occasion. I have a question for those of you that own one. When you chamber your first round are you A)using the charging handle while the bolt is all the way forward or B ) using the bolt release while it is locked to the rear? 

Also, I had 2 FTE's while using Freedom Munitions so it doesn't seem to like that ammo for whatever reason. 

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