M&P .40 1.0 Latest Updates

Disabled1 · #1 08-07-2017, 06:55 PM

A few months ago I bought a DPD LE trade in M&P .40 1.0.
Like I do with all of my firearms, I documented the serial number. I posted a pic of it here. A member stated that being it had a MATRIX next to the serial # that my 1.0 had all of the latest updates done to it. The manufacture date of my 1.0 is November 2015. Can anyone please explain to me what these latest updates might be?

Shield9mm · #2 08-07-2017, 09:03 PM

"H" trigger bar, and slide stop with the notch.

Smakmauz · #3 08-08-2017, 01:58 AM

Quote:

Originally Posted by Shield9mm

"H" trigger bar, and slide stop with the notch.

This ^ + the 1in10 twist barrel which I think also had a slightly tighter dimension to tighten up the lock up a bit for better accuracy.... And the latest version of the non-performance center sear

The new trigger bar and slide catch were redesigned to enhance the reset characteristics. It worked because the older models had almost no tactile or audible response. The barrel obviously to address some of the accuracy issues of the older models and the sear makes the break cleaner and with a little faster reset because of the redesign of the little lobe on the front.

All of these updates were made slowly over time but the latest generation 1.0's are pretty nice.

presspics · #4 08-08-2017, 02:34 PM

Quote:

Originally Posted by Smakmauz

This ^ + the 1in10 twist barrel which I think also had a slightly tighter dimension to tighten up the lock up a bit for better accuracy.... And the latest version of the non-performance center sear

The new trigger bar and slide catch were redesigned to enhance the reset characteristics. It worked because the older models had almost no tactile or audible response. The barrel obviously to address some of the accuracy issues of the older models and the sear makes the break cleaner and with a little faster reset because of the redesign of the little lobe on the front.

All of these updates were made slowly over time but the latest generation 1.0's are pretty nice.

The barrel twist rate was updated on the 9mm version not the .40. The .40 has never suffered from an accuracy problem.

Smakmauz · #5 08-08-2017, 03:51 PM

Quote:

Originally Posted by presspics

The barrel twist rate was updated on the 9mm version not the .40. The .40 has never suffered from an accuracy problem.

Judging from what I've seen on an older .40 recently that's not the case. This .40 with a factory barrel seemed to have a much different barrel twist from my newer one. They definitely changed something on the .40 barrels because the new ones have the same dimple mark as the new 9mm barrels. All I know for sure is that they have the 1 in 10 twist now as of the last version because the rifling rate on both my 9mm and .40 full sized guns is the same and they are the newest versions.

I would say that it is logical that even with the older twist rate, the .40's wouldn't have been as affected because being a bullet with more surface area, they would stay in contact with the rifling more and get more stabilization. But as I understand it, the rifling in a pistol barrel has a fairly negligible effect on accuracy.