Installed spring kit, flat trigger and then the new shorter pull trigger in my 365 made good difference and lowered trigger pull to 4 1/2 lbs. Have shot it maybe 300 rds and trigger pull still in 4 1/2 range. It felt slightly draggy or little rough though. Thought maybe the titanium striker would be better and smoother made than factory Sig. Just installed it and trigger pull went up to 6 1/2 pounds and seemed rougher. Used the new 3 lb spring Any thoughts as to why higher trigger pull. and what to do>
I found out that the metallic striker sleeve rubs against my SS striker (don’t have the titanium one) more than the factory MIM one. Used the original plastic one and it felt better.
Put it back to completely stock and change ONE thing at a time until you find the issue. This 100% goes for anytime you start modding a gun or, well, just about anything else. You do a bunch of mods/upgrades at once and you could be multiplying issues down the line. Again, start stock and add one new part at a time and test fire it each time before adding something else new unless it’s totally unrelated to what you’re trying to do. I.E. adding new sights or an optic isn’t going to mess with trigger pull.
One at a time is what was done. year ago added spring kit and trigger pull dropped to 4 1/2 lbs., several months later, added short pull trigger kit and pull was same 4 1/2 lbs. Just added the titanium striker and 3 lb spring with it. Now trigger pull is 6 1/2 pounds.
Will take striker out and reinstall Sig striker and older Mcarbo spring to see if it goes back to 4 1/2 pounds. Was hoping the titanium striker would smooth out the trigger pull some as it was slightly “gritty” feel.
That’s weird. I installed the machined stainless steel striker in mine and it’s perfect. Have you checked your titanium striker for burrs under good magnification? There might be something that needs smoothing out. I’d also do the “25 cent trigger job” that’s commonly done on Glocks where you use Q-tips (NO Dremel) and metal polish and slick up all the parts in the trigger assembly like the trigger bar, etc. Don’t actually remove any metal, just shine things up. It really does make a difference.
O just replaced the titanium striker with the original OEM one and replaced the 3# striker spring with the one that came in the Mcarbo spring kit and now have the 4 1/2# pull back. So it is the titanium striker with the 3# striker spring
Then replace just the striker, but not the spring.
Or the spring, but not the striker…
Do the guys at MCARBO check these forums?
I just placed in the new titanium striker for my 365 and I am also noticing a “grittier” trigger pull. prior I was running NDZperformance’s striker with factory striker spring.
I have MCARBO’s spring kit along with the CNC trigger upgrade. I put the factory striker spring back in after having light strikes with certain ammo types. the trigger pull with the NDZ lightning striker with the 3lb MCARBO spring felt the best but light strikes is not acceptable for me.
At this point I would say on my finger the trigger weight FEELS heavier than before, but I won’t say for certain until I get a tool to test it. I will say on a positive note, the trigger now doesn’t have that post wall creep as bad as the factory trigger had.
For constructive feedback, titanium is a hard metal to machine due to how elastic it is so I know there is some limitations to how tight of a fit and finish we can get on the sear surface BUT maybe there is an oxide finish that has higher lubricity than bare titanium against steel that would help minimize the “grittyness” of the trigger.
Don’t use the steel sleeve. use the plastic one and please report back, I am curious.
When I tried a Stainless Steel striker with that steel sleeve, they felt like they were “catching” each other, gritty.
Now I have the SS striker and OE plastic sleeve with no issues.
Mcarbo has requested return of striker and will send back to them.
Hey guys I’m the lead engineer on the project at M*Carbo. I’m sorry to hear you are having an issue with your striker. We machine a very nice finish on the surfaces where the striker contacts the sear and you should be getting a very smooth trigger pull of around 4 lbs with less creep than the OEM striker.
@thapco I see that you have already reached out to us and I hope customer service has been helpful with your issue.
@Mr_Conceito If you could provide me your order number for your striker I will personally tell our customer service team to reach out to you to resolve this issue.
this is the first time I have had a problem with Mcarbo. all other times and parts have been great. I will admit, they have responded favorably to help and that is a great positive for them.
I am not dissatisfied with anything they have or have done, just wish this one problem had worked for me the first time. It is a bit-- removing and replacing striker on this gun and doing it several times without special tools hurts fingers.
I would recommend using a 1/16" punch to push the striker sleeve tab inward to remove the back plate. It’s small enough to fit in between the back plate and the striker sleeve. Finger saver for sure. And it helps keep the sleeve’s tab in good condition. After multiple times of removing the striker sleeve, that tab will break off if the plastic worn down too much.
I also have the titanium striker and flat adjustable trigger, and, after installation, the trigger was a little gritty.
However, I just finished polishing the striker with a cotton wheel and my finest polishing compound.
The grittiness is completely gone, and the trigger pull is a little over 3 lbs.
Finally installed the replacement titanium striker back in my gun. Much better. Smoother and dropped the pull weight some more. Thanks MCARBO for taking care of this. Now happy.
Just purchased the titanium striker for my p365xl build. I’m wondering if anyone has used or discarded the striker return spring that sits in the the plastic striker sleeve? Thanks for the help.
I always save my OEM parts just in case I need it in the future.
I just did the same thing. I still had some Flitz polish left over from polishing the feed ramp on my sub2000 (4years ago) and now my trigger pull is smooth-ish. I had to pull this thing out and polish it 3 different times to get the grit out which is surprising for such a tiny surface. Titanium definitely doesn’t polish as easily as stainless steel does.
Are you using the small return spring in the striker sleeve with the new titanium striker?
Nate, You don’t need to reinstall your striker return spring if you don’t want to. I’ve talked with Sig about this because we buy P365s periodically every couple of months and Sig stopped putting the striker return spring in the striker assemblies because they say “it isn’t needed” and that the firearm is still safe with or without it. We’ve also tested thousands and thousands of rounds through all our P365s without that spring and we haven’t run into any problems. Some people like to keep their striker return spring in their guns and that is fine too so you can either have it in your P365 or you can remove it. All our parts will still function properly for you either way.