M&P M2.0 Internals in a 1.0

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ScottS

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After getting really dirty (mostly from suppressor use), my M&P9 (we'll call it 1.0, even though that's not an official designation) started to give me the dreaded "dead trigger," despite my 1/8" sear plunger and spring (the supposed factory fix). A quick dunk in the heated UC seemed to solve the problem, but, then again, it was intermittent, so it's hard to tell if I truly exercised that demon. Add to that the fact I was jonesin' for a M2.0 trigger, and I had an idea.

I ordered a M2.0 sear housing block and M2.0 trigger to see if I could make the swap. Couldn't find much written about it, so I figured I'd just go ahead and experiment. A quick look at the two shows the biggest (and most important) difference between the two:

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This "tab" prevents the sear housing block from seating in the frame. Applying the theory of "grinding on the cheapest part," I carefully removed the tab. Here it is, tab removed and smoothed, but before the Birchwood Casey Aluminum Black.

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Here they are lined up.

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After trimming, the sear housing block and 2.0 trigger dropped right in. No adjustments needed on anything else.

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If you're particularly astute, you'll notice that's a Performance Center sear (and spring and plunger).

Trigger feels great, just like the trigger on my M&P M2.0 Compact.

It's probably fitting to drop these components into the gun, because it's a hybrid 1.0/2.0 anyway. I really like the aggressive texture of the M2.0. I don't want any added "girth," so the appliques like Talon Grips, etc. are out, and nothing says "ghetto" more than someone taking a soldering iron and "stippling," so my compromise was to add the backstrap from a M2.0. It gives me some added aggressive texture to keep the gun absolutely stationary in my hand. Not as good as a full M2.0 grip, but a definite improvement.

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I didn't have any fitment issues with my Fullsize and Compact 1.0's.

Evolution of My M&P9

PMC847's needed a little fitting.

PMCs M&P PC C.O.R.E. M1.75.

Still nicely done!!


Your 2.0 sear housing block dropped right in? Mine was held up on the "tab" on the bottom. There's a hole in the 1.0 frame I thought it would drop into, but it was a no-go. I went incrementally on removing the tab on the sear housing block, but it wouldn't drop in until I got it completely smooth. I was tempted to open the hole in the frame just a bit, but I figured I'd rather ruin the $30 sear housing block if I screwed something up.
 
I was surprised mine dropped in. I did both my fs and compact. I thought I'd have to file that tab off, but decided to try it first and it slipped right in.

The only issue I've had so far is from the trigger shoe itself. If you look at the 2.0 frames, S&W moved the overtravel stop (the little bump) further up the grip. So on my FS 1.0, after shooting 50-60 rounds, I'd get a fail to fire because I can't pull the trigger back far enough since the trigger show bump hits the overtravel stop. I had to file/sand the bump on the trigger shoe about halfway. Now it seems OK. Did the same to my compact but haven't had a chance to shoot it yet.

Anyway, I agree, better to work on the cheap and easy to replace part.

My FS also sports the 5" CORE slide kit topped with an RMR. Other than the RMR, it's all still 100% S&W.
 
So, how does it shoot?
Nice timing. I literally just walked in from the range. 90 rounds (6x15) pretty much as fast as I could get them through the gun. Great trigger, and not one bobble. Very happy with the "conversion," and getting ready to do my other M&P9.
 
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