Why I Keep Buying the Metalform Colt 9mm Magazine

If you've spent any kind of time trying out AR-9 builds, you've most likely realized that selecting a metalform colt 9mm magazine is the quickest way in order to fix feeding problems that plague nearly all pistol-caliber carbines. Generally there is something incredibly frustrating about visiting the range with the brand-new build, just to have it convert into a single-shot bolt action because your magazines can't keep up with the cycle rate. I've been there, and honestly, it's why I halted playing around with the particular "budget" options plus just stuck with what actually works. ...

April 3, 2026 · 7 min · Renta Elias