M&P Slide to Frame Fitment

[jhc77]

Just noticed this yesterday. I've owned my M&P for just over 5 years. Since this is not my primary carry, I was going to check for dust bunnies and lube. Soon as I removed it from the holster I noticed a rattle. I dropped the magazine to check a little more. Slide to frame fitment to me is off. Movement is side to side. The rattle is coming from the slide (end cap/plate side) and sear housing assembly on the frame. Sounds more metal on metal than plastic on metal. Any reason why the lockup isn't tight any longer?
Thanks for the help as always.

[c.a.willard]

Do you have access to a set of calipers by chance.  Just measured my M&P 9 and i have less than a 10th of an inch of clearance on my frame to slide fit.  My sear housing block is measuring at .8995.  Also if you can take clear zoomed in pictures of the frame rails it may help figure out where your problem lies.    

[jhc77]

No calipers here. I can email some pictures tomorrow if you can PM me. Posting pictures on here is my nemesis. It worked once or twice out of pure luck.

[jhc77]

c.a.willard cleared me up.