I've never had this problem, but I'm glad you told us about it.

Sending it back to S&W is the right thing to do. Not only will you get it fixed for free, but S&W can then use what they find with your rifle to improve future rifles. I'm not saying they will, but at least they have the opportunity. This makes things better for all of us.

Let us know what happens.

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Freedom isn't free.