I had to get out my 9mm to see what you're talking about. It also has those tabs.

I know both rods would ride the same, and the stock plastic rod will have some give, but wouldn't a heavier spring force the rod, whether plastic or metal to impact the tabs more due to it's stronger pressure under recoils.

Will this become a "do not use" debate of metal guide rods or heavier recoil springs?

Will S&W have anything to say about this being an issue or are we all alone until it happens and word gets out that S&W then starts saying VOIDED WARRANTY due to using aftermarket part years later---after everybody used the part?

Remember, the frame of a SD-VE model "IS" the FFL registered part.

I know it's happened with Hi-Point carbines where people----for years, used ATI stocks and then HP starts saying no more warranty work if an ATI stock is/was used.

Any thoughts?