350 Legend help!

[Wbayne]

350 legend Ar15 build, initially jammed every time, filed down front of mag and runs great til last round, bolt locks back with one left in mag...is this a magazine issue? Over gassed?


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[johntheplinker]

When you say it jammed every shot, what exactly was happening? Double feed, fail to extract, fail to feed, stovepipes, etc...

 

[Wbayne]

Fail to feed, bullet would wedge sideways (direction depending on side of mag it fed from) Tore everything down and very generously lubed again, put together and tried all over before filing. Feed ramps seem good to go as well


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[churchmouse]

Do you have another mag to run in it to compare.

 

[Wbayne]

Actually just got a different mag in this evening, havent had a chance to run it just yet


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[johntheplinker]

I think the mouse has the right idea.

 

[Wbayne]

Im hoping thats what it is as well but didnt know if there was anything else i could be/should be checking...this is the first upper ive built so, learning experience, hopefully nothing ive done


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[Huzrjim]

My cousin had a similar issue with the one magazine he received with his 350 Legend AR. It would hang up on the next to last round. We stripped everything in the BCG, cleaned, lubed, then even trimmed a bit of metal on the mag, but no resolution. I had an extra CMMG mag with my rifle, that he tried and every round fired fine. I've had zero issues with the 350 Legend CMMG mags so far.

 

[DadSmith]

Has any tried the 10rd Duramags for 350 Legand?

https://dura-mag.com/product/duramag-ss-350-legend-stainless-steel/

 

[Wbayne]

Has any tried the 10rd Duramags for 350 Legand?

https://dura-mag.com/product/duramag-ss-350-legend-stainless-steel/

From my understanding duramag is the way to go for a 350, my cmmg mag is giving me fits, i ordered a duramag 20 rounder but havent gotten the opportunity to test it out


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