So I noticed an odd rattling sound as if there was a loose screw bouncing around inside my spare carry mag this morning. I checked the mag loaded into my EDC and no sounds.
I unload the spare mag and give it another shake. Nothing. I reload all 15 rounds back in and again, rattling.
At this point, I’m thinking I need to take apart the mag and check its internals.
As I go to take apart the mag, I notice that the mag has a larger base than the one in my gun and I get that “I can’t believe I’m an idiot” sensation. I release the mag from my EDC, pop out 2 rounds and load them into my spare. No more rattling. Yup. I just realized that 2 of the 3 mags that I got when I bought the gun were 17 round mags and I’ve been either 2 or 4 rounds short whenever they’ve been in my carry rotation. Somehow, I never noticed that those mags were slightly longer and I always went by the invoice that listed 3 15 round mags.