IMO,,,sending your gun in for new button's is not the fix. Let me explain.

When I bought mine, I had no issue's at all with the button's. But, I went ahead and had S&W send me some new one's for when I did have an issue. I put the new one's in, and THEN had issue's with hard to activate button's. Put the original's back in, and now they didn't work right either. I thought I some how messed up my laser. Put the new one's in again and they now worked. Tried the original's again and they were perfect again.

So after switching different button's back and forth many time's, I came to the conclusion that the new button is not the fix. Just taking them out and rotating them is. It also seems to help by squishing them around in your finger's.

I have not needed to do the Q-tip/tube mod yet. But I would do that before I sent my gun back in just so S&W can rotate the button's so to speak.

Hopefully someone is working on a new design. But I kinda doubt it when all they're basically doing is rotating the button's by putting in the same poor design,, to pacify customer's.