I bought 3 Tapco black 30rd mags. 2 out of 3 fed fine. The third however would get caught about halfway up the mag, like it was snagging.
The 2 that fed fine had a very slightly different color plate on the bottom, you could tell it was manufactured in a different batch. I figured I would mess around with the 3rd and see if I could fix it.
I slid the plate off the bottom of a functional mag and the one that was snagging. The functional mag fit the spring perfectly. Inside the mag that was catching, the spring didn't cover the whole plate it was pushing on under the bullet. Inside of th