Best AR that takes Colt SMG Mags?

[titsonritz]

I see that QC10 also offers lowers that accept Glock 9mm and H&K 9mm mags, is there an advantage to using Colt mags or is it just personal preference? I ask because I know nothing about SMG mags nor AR 9mm lowers, but I do own Glocks and have toyed with the idea of a 9mm AR that accepts mag I already have.

[Shrine]

I see that QC10 also offers lowers that accept Glock 9mm and H&K 9mm mags, is there an advantage to using Colt mags or is it just personal preference? I ask because I know nothing about SMG mags nor AR 9mm lowers, but I do own Glocks and have toyed with the idea of a 9mm AR that accepts mag I already have.

For me, it's was preference. I already had a Glock AR9 and dig it, but wanted to build one myself and have always dug the look/style's of the old Sterling L2's and 80's KG9/Tec-9's, so I mapped out that build accordingly.

But I think, if there was to be an advantage, it would probably go to the Glock pattern lowers because of how readily those can be had and at much more affordable prices. So many people have them now too, they're tested and really the way the AR9 industry seems to be going - at least that's what I see when I look around. Just my take on it.

[Clint]

New frontier armory has an AR lower that takes MP5 mags.

https://www.newfrontierarmory.com/sh...-billet-lower/

This seems like an excellent option if it works as intended.


The MP5 mag is double stack, double feed and constant curve.

It has all the ingredients for a proper smg mag.

Tapered cartridges feed best from a curved magazine.