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Posted: 6/20/2014 2:03:48 PM EDT
[Last Edit: 6/20/2014 2:50:01 PM EDT by MethylMercaptan]
I ordered a new sear housing block for my M&P only to find it won't fit into my older FS with the internal lock. There is a dimension fit issue - I could grind the new gen SHB down in certain areas to get it to fit, but I don't think I'm going to do this.

Does anyone still provide the larger sear return spring upgrade? Apex no longer does this. Is there an intermediate sear housing block (larger return spring, original external dimensions) I should be looking for?

Should I just drill the damn thing out myself?

Sent an email to speedshooters to see if this is the correct sear housing assembly:

Link Posted: 6/20/2014 2:30:51 PM EDT
Yes, S&W still makes and sells the old "large sear spring" assemblies. If you have a small sear spring assembly, pull it out and send it to them with an explanatory letter - they will send you a large spring version for free. Of course, you may be without the gun for several weeks, so you can also buy one from Midway: LINK. Once you have replaced it, send the one out of your gun back to S&W... when the replacement eventually comes, you will have a spare.
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