Apex Tactical Spring Kit for the SD

[Fat B]

Hi,

I think you will find that the spring set that Scott put together lightens the trigger nicely. A little polishing on the striker and sear face really smoothes things up.
In a few weeks we will release our aluminum trigger for the SD. The combination really makes the gun very shootable without sight upset when the striker releases.

-Randy

Any word on an aluminum trigger?

 

[Flork]

Aaaaah got cha.

The reason you will see a lighter looking strike with a primer only is that you don't have the inertia of the case kicking back on the protruding firing pin because there is no bullet to launch.

Scott

 

[Willie300s]

Scott

I thought that would be a factor.
This kit really makes the SD perfect for it's intended purpose.
Thanks for the reply.

 

[spawn]

I installed the spring kit in my sd 9 and i love it.I really liked this gun before but now it's even better. I put 200 rounds through it after i installed the new springs with no misfires at all.Can't wait for the aluminum trigger.

 

[cavegeo]

I just recieved two spring kits for my SD's will install them this weekend to see how they do.

 

[cavegeo]

I installed the kits in my SD's was harder than what the video made it look like. The slave pin was not of much use. Had a hard time getting the slide release lever to line up to allow the trigger pin to be reinstalled. Once I did get them back together I could tell that the trigger was much lighter than before. Will need to take them out and shot them possible this weekend.

ETA I cannot wait till they come out with a kit for my Sigma.

 

[blkpitbull]

Is there any interest in apex doing a spring kit for a sigma? This may have been asked already but I didn't see it....I for one would buy a kit for sure...
Thanks

 

[Randy Lee]

A Sigma specific kit and aluminum trigger are in process now.

-Randy

 

[blkpitbull]

A Sigma specific kit and aluminum trigger are in process now.

-Randy

OMG, I think I love you....

Any time estimates.....but I'm patient.....

 

[Randy Lee]

Scott and I are finishing up the details, so my best guess is April/May.

Randy

 

[spawn]

What's the word on the sd aluminum trigger? Is it going to be an easy install or will it require a gunsmith? Any idea when it will be released? THANKS

 

[325pdman]

nice reduction

I got the Apex spring kit today and immediately replaced the striker spring. Just that made quite a difference - cut the weight by at least a third and the break is much crisper and less hard, if you know what I mean. I'm wondering if the trigger return spring and plunger spring replacements are even necessary? How much of a difference will they really make?

 

[cavegeo]

Shot my SD 9mm that I had installed the Apex spring kit in yesterday at an IDPA match. Put about 130 round through the pistol.

I experienced two Light Strike on the second from last stage. I think they may have been due to my being tried as it was a rather Hot day (80*) and a long day as well as there were 115 shooter at the match.

I suppect I did not have a strong grip on the pistol as I did not have any other issue on the remaining string of fire on that stage or the next stage.

I will shot again at next month match as see if their are any issue before getting to concerned.

 

[Flork]

Cavegeo,

Please keep me up to date on the situation. I've been shooting my SD's with as heavy of primers as I can find and haven't had any light strikes yet, but that doesn't mean it's impossible.

What ammo are you using? If reloads, what primers, how deep are they seated and how does the crimp look?

Thanks.

Scott @ Apex

 

[Flork]

I got the Apex spring kit today and immediately replaced the striker spring. Just that made quite a difference - cut the weight by at least a third and the break is much crisper and less hard, if you know what I mean. I'm wondering if the trigger return spring and plunger spring replacements are even necessary? How much of a difference will they really make?

OOPS, I totally missed your post with this question.

The Trigger return spring will reduce the pull weight by more than a pound in most cases. The Striker Block Spring will help to reduce or eliminate the "double click" in the reset. If you're not feeling a double click, You could consider omitting that spring.

Scott @ Apex

 

[cavegeo]

Cavegeo, What ammo are you using? If reloads, what primers, how deep are they seated and how does the crimp look?

Scott @ Apex

Scott

I was using my own reloads, I use CCI small pistol primers.

I seat my primers with a Lee Auto Prime, the older style. I seat them firmly but don't measure them.

I use brass that I pickup from the range usually Winchester or Remington but can run into any and all manufactures.

I use Lee Crimp Die on all my reloads, I tend to use a heavy crimp.

I collected the rounds and will take a look at them and will see if I can get some photos of them this evening.

I don't have an account to load the photo up. Sorry.

 

[EJFRANZ]

Sounds like the Apex spring kit is a must do for my SD9. The aluminum trigger will also be a must have. Any ideas on price?

Great stuff here in the forums!

Ed

 

[Fat B]

I just installed the spring kit in my SD9. The trigger pull went from 8 1/4# to just 5 3/4#. Not too bad. I'll have to give a better review of it after I shoot the gun and retest the trigger pull.

I do have a couple questions for anyone who wants to answer them. In the video he filled the trigger return spring up with white lithium grease. Just for lubrication? Do I have to relube it down the road?

At 10:25 in the video, he mentions the sear engagement on sear housing block can be polished on both the bottom and the back edge. After I reassmebled the gun and I was looking at how it worked, and it seemed to me that the trigger bar pushed on the front edge of the sear engagement and not the back. Any idea on why the rear is getting polished but not the front?

And one suggestion that I do have it the slave pin that was included in the kit quickly wore the finish off of my trigger pin when I was trying to wiggle everything out. Now I have a nice shiny pin on the side of my gun instead of a black end. Not that big of a deal but if I had to do it over again I would use a q-tip or a wooden down instead of the included pin. I think a quick smear of a sharpie will take care of the problem.

 

[Flork]

Sounds like the Apex spring kit is a must do for my SD9. The aluminum trigger will also be a must have. Any ideas on price?

Great stuff here in the forums!

Ed

We're not absolutely certain on the Al. triggers just yet, but will let you know as soon as we have that info available. We're also going to be working on a polymer trigger for the M&P that will be somewhat like our Al. trigger, the idea will be to provide you with a more wallet friendly trigger option for the M&P and the SD.

Scott @ Apex

 

[Flork]

I do have a couple questions for anyone who wants to answer them. In the video he filled the trigger return spring up with white lithium grease. Just for lubrication? Do I have to relube it down the road?

We fill the springs with grease for 2 reasons, the first is to dampen vibrations. The viscosity of the grease will dampen the shock wave that flows through the spring, it may seem like nothing, but it's kind of a habit of ours here in the shop. If you visualize how the spring reacts under recoil, it's going to be at full stretch and bounce up and down pretty hard while the gun fires and the action cycles. We're estimating that the trigger return spring gets more than 100 G's under recoil. So the grease is to help dampen the shock to the spring. We have absolutely no conclusive evidence that the grease helps, but it sure makes us feel better about it.

At 10:25 in the video, he mentions the sear engagement on sear housing block can be polished on both the bottom and the back edge. After I reassmebled the gun and I was looking at how it worked, and it seemed to me that the trigger bar pushed on the front edge of the sear engagement and not the back. Any idea on why the rear is getting polished but not the front?

Actually what I should have said was polish all 3 sides. The polishing will help smooth out the trigger pull and reset if you get the front, back and bottom.

And one suggestion that I do have it the slave pin that was included in the kit quickly wore the finish off of my trigger pin when I was trying to wiggle everything out. Now I have a nice shiny pin on the side of my gun instead of a black end. Not that big of a deal but if I had to do it over again I would use a q-tip or a wooden down instead of the included pin. I think a quick smear of a sharpie will take care of the problem.

The slave pin for this kit is likely to be changed in the near future, I'm sorry that it rubbed off a bit on your trigger pin. I've had good luck using oil on a cleaning patch to remove the aluminum rub off.

Scott @ Apex