ou1954, no confusion from you.

That's my point, WHY DONT THEY JUST SAY, WE DONT MAKE SPRINGS FOR THE SD SERIES ?

Why even bring up the M&P when we want to know about the SD series ?

The Glock 19 spring does not work, it stacks before the slide hits the stop.

If they were that concerned why don't they tell after market vendors
not to use their name for guns they don't make springs for ?

Because their selling more springs this way.

Like it was said earlier, it brings up more questions than answers.

I went to their website before my last post.

Ok I'm done with this topic till I get some measurements from my original spring and my NDZ ISMI Glock 19 spring.

Thanks,3