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Hunh, we now have S&W saying the recoil spring is 10lbs, ISMI claiming it is 14lbs, and wolff claiming it is 16lbs.



You'd think springs were osme new fangled thing we didn't know how to rate their strength.
 

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I tried a 15 lb ISMI spring and it is a might bit stiffer than my wore out stock one.
 

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Discussion Starter #5
if anybody does the reduced striker spring i would love to hear comments on it. on my sigma it worked wonders, but i also changed out the trigger spring.
 

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I thought the striker was fully cocked on the m&p

:?: how would a reduced striker spring help ?

Wolf also has xp striker spring wouldnt that be better for the light primer strikes the m&p does :?:
 

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I tried a standard OEM Glock striker spring in one of my M&Ps for awhile, it made the trigger pull a TINY bit lighter but also made the reset kinda sluggish. I went back to stock as I like a snappier reset. I may try a Wolff XP Glock striker spring to see if it'll make it even snappier than stock.
 

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gotm4 said:
I tried a standard OEM Glock striker spring in one of my M&Ps for awhile, it made the trigger pull a TINY bit lighter but also made the reset kinda sluggish. I went back to stock as I like a snappier reset. I may try a Wolff XP Glock striker spring to see if it'll make it even snappier than stock.




M&P trigger reset is not affected by changing the striker spring, the pull is affected but not the reset. Take the slide off your M&P and push foreward on the sear, the reset will not change. The trigger return and safety plunger springs affect reset.





Dan
 

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Given the reuslts people are getting from teh trigger job as described, I don't see why there'd be a need for a lightened striker spring unless you want to go below 3lbs.
 

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raz-0 said:
Given the reuslts people are getting from teh trigger job as described, I don't see why there'd be a need for a lightened striker spring unless you want to go below 3lbs.


:arrow: +1
 

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DanGTG said:
[quote name='gotm4']I tried a standard OEM Glock striker spring in one of my M&Ps for awhile, it made the trigger pull a TINY bit lighter but also made the reset kinda sluggish. I went back to stock as I like a snappier reset. I may try a Wolff XP Glock striker spring to see if it'll make it even snappier than stock.




M&P trigger reset is not affected by changing the striker spring, the pull is affected but not the reset. Take the slide off your M&P and push foreward on the sear, the reset will not change. The trigger return and safety plunger springs affect reset.





Dan[/quote]



I think you're 100% correct but I can feel a difference in a stock M&P spring vs a Glock OEM spring. I like the M&P one best.
 

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Just installed the wolf xp striker spring in my m&p

it feels the same for the most part on breaking but i have noticed the trigger does reset with a little bit more force

waiting to go to the range this weekend .
 

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DanGTG is correct guys the reset is not effected by the striker spring in any way. The reset is a result of the trigger bar snapping back over the sear and the trigger bar coming down off the striker stop plunger. This is why I can get a better reset when I do a trigger job I can time both actions to occur at about the same time then you only get one positive click in the reset rather than 2 small clicks as it comes from the factory one when the trigger snaps over the sear and the second when it lets the plunger down.
 

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Dan Burwell said:
DanGTG is correct guys the reset is not effected by the striker spring in any way. The reset is a result of the trigger bar snapping back over the sear and the trigger bar coming down off the striker stop plunger. This is why I can get a better reset when I do a trigger job I can time both actions to occur at about the same time then you only get one positive click in the reset rather than 2 small clicks as it comes from the factory one when the trigger snaps over the sear and the second when it lets the plunger down.


Man Dan you got me thinking



I was freaked out for a second when i read your mention of two clicks in the trigger reset. In my M&P the first click occurs at about 1mm foreward travel from the stop in the frame and the second is @ ~3.25mm. About how far foreward in the travel is the reset point on your trigger setup? This brings a couple other questions to mind, I'm gonna send you a PM.



Dan
 

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raz-0 said:
Given the reuslts people are getting from teh trigger job as described, I don't see why there'd be a need for a lightened striker spring unless you want to go below 3lbs.


The lighter striker springs are needed on Glocks when using very light recoil springs. A standard power one can make it so that the slide doesn't return to battery all the way and causes light strikes with this happens. The Wolff M&P are probably made for the same reason. I'm using a 15lb Wolff Glock 17 recoil spring in my M&P and it's working very well with a standard M&P striker spring. If I went down to a 13lb or less I would get a lighter striker spring.
 

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so the consensus, is if I wore out my recoil spring, what should I go with for a replacement?



what actually is the factory spring?



:?
 

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rjhauser said:
so the consensus, is if I wore out my recoil spring, what should I go with for a replacement?



what actually is the factory spring?



:?


If it's a defensive use gun just get a stock recoil spring when yours wears out, I imagine it's good for at least 5K rounds or more.



Mine is a competition gun so I use a lighter spring so that the gun shoots flatter and cycles more quickly when using standard pressure 115gr FMJ (makes follow-up shots easier/quicker). On my M&P9 C I use a stock recoil spring and have it loaded with Federal 115gr+P+ (9PLE).
 
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