Cmng 9mm upper & mags.

340six · Dec 1, 2020

I ordered awhile back a complete 9mm Rifle Resolute 300 upper in Black.comes with mags already converted marked 9mm. As well as the delayed blow back BCG And Charge Handle. (IE) Everything needed.
And also a,set to convert 3 more 3rd gen magazines.
Just a,few pics out there of them in case someone wanted to see them.

thperez1972 · Dec 1, 2020

Did the magazines work for you? The 9mm inserts are Endomags from Mean Arms. I pre-ordered a set of inserts when they first came out and never got them to function correctly. I ended up getting a dedicated 9mm lower.

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jdindadell · Dec 5, 2020

The cmmg bolt uses a ar style plunger ejector, so the mag inserts that are compatible are not quite the same as the endo mag models that have an ejector built into them. I can imagine the variations of upper and bcg could cause issues with a mag mounted ejector, and from what I read a while back that was the problem most people were having with the endo conversion mags.

Since the cmmg does not need a mag mounted ejector the included mag inserts just have to feed the rounds. I have wanted to try a cmmg radially delayed upper in 10mm, but that requires a dedicated lower, to run glock mags. I have the lower, just have not got around to getting an upper yet.

thperez1972 · Dec 5, 2020

Well that makes sense. And now that you said that, I don’t see the ejector in his pictures.

Cmng 9mm upper & mags.

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