STI mags not seating with a positive click

[lucas]

I have 126mm 45 cal mags that instead of seating with a positive click, they feel and sound like metal grinding against each other. What causes that?

[Yeti]

Pull your top end and observe how the mag catch - mag tube slot interface.

Take out the mag catch, disassemble, clean, and inspect. You may have a burr or damage on the catch.

Put a small amount of synthetic grease on the spring/catch when you put it back together.

[Ultimo-Hombre]

Try pulling the grip off so can get a good look at things. See how the mag catch engages with a bare grip, that can help you isolate what is causing the funkiness.

Oh, forgot to ask, you talking 2011?

If 1911 I guess you can pull the top end.

[lucas]

I'm not done yet but I have made progress. So far, I have found one that the top left side of the tube in front of the feed lips was bowed enough ,it would catch the bottom of the slide more then normal on it's

way up. I straitened it with pliers.

The other problem tubes, I'm not sure what to do. The tubes at the back top of the feed lips are digging into the frame where the disconnect pokes through and ejecter is, a lot more than the others. The front to back measurement seems normal. I'm thinking of sanding that part of the mag.

I cannot see where any of them are in contact with the grip screws, by the way.

[basman]

Try with the basepad removed

[lucas]

Try with the basepad removed

I did remove base pads.