smfort Posted February 22, 2017 Share Posted February 22, 2017 (edited) Hello Everyone! First off I would like to say that I am new to the forums and I was directed to post this question here! So here it is: I have a S&W M&P 45acp that I installed an Apex Flat-Faced Forward Set Sear & Trigger Kit into and I have had issues with double firing. The gun is brand new and nothing else has been done to it and I had no problems up until this point. I think it might be the sear spring but not sure (it was recommended that it might be the sear spring this morning, I have not tried it yet). Anyway, when I initially installed the kit I put the weaker spring in and I really thought the trigger pull was a bit light, but nice none the less. Anyway, I had several "doubles" and I thought that it might have been the combination of the light trigger, the recoil and the fact that I might have been "riding the trigger" a little bit. So I install the heavier trigger return spring (the green spring) and test fired the gun and it did great, as a matter of a fact I ran it 2 complete matches with no issues..then this past Sunday at a match doubled on me 4 times in the first stage. Several fixes have been suggested the one that I am planning to try next is to replace the kit provided sear spring with the factory sear spring and if that does not work then I am planning to reinstall all of the factory parts. Any suggestions are greatly appreciated and I would like to thank you all in advance. Also, it is very possible that I have something installed incorrectly this is my first trigger job so again any suggestions, comments, recommendations, etc...are greatly appreciated and thank you all again in advance. -smf Edited February 22, 2017 by smfort add text Link to comment Share on other sites More sharing options...
dapribek Posted February 22, 2017 Share Posted February 22, 2017 This also happened to a friend of mine and she took it to a local gunsmith who took care of it. Unfortunately I don't know what was done to solve the problem. BTW, he had also installed the Apex parts. Link to comment Share on other sites More sharing options...
smfort Posted February 22, 2017 Author Share Posted February 22, 2017 dapribek, Thanks for the reply. I talked to a local gunsmith earlier today and he said to try the factory sear spring with the other Apex parts and if that does not work to call him back. Thanks again! Link to comment Share on other sites More sharing options...
Tarkeg Posted February 23, 2017 Share Posted February 23, 2017 Have you contacted Apex? They can help you with this. Link to comment Share on other sites More sharing options...
smfort Posted February 23, 2017 Author Share Posted February 23, 2017 Yes I have been in contact with them and they are and have been very helpful. They have requested that I send them pictures of the install which I am going to do next. Thanks, -smf Link to comment Share on other sites More sharing options...
Tarkeg Posted February 23, 2017 Share Posted February 23, 2017 Excellent. Good luck! Link to comment Share on other sites More sharing options...
daytona955i Posted March 10, 2017 Share Posted March 10, 2017 Are you sure you didn't reuse the factory seat spring? The FSS sear spring is actually more stout than the stock one. Link to comment Share on other sites More sharing options...
smfort Posted March 10, 2017 Author Share Posted March 10, 2017 I do not think I did but I will recheck it. I think I might have gotten the issue fixed. I found a very small amount of what appeared to be trash (I mean "very small" extremely hard to see) between the Striker Spring and the Striker Spring Guide, so I took it apart, cleaned it really well and put it back together...test fired it and did not have an issue. Of course I had test fired it before this and not had any issues also! I guess will just watch it to see what happens. Thanks for the reply, I will check to make sure I have the correct seat spring installed again to be sure. Thanks, Scott Link to comment Share on other sites More sharing options...
daytona955i Posted March 15, 2017 Share Posted March 15, 2017 Was it firing twice on one pull, or once on the first pull, and once on the let off? Link to comment Share on other sites More sharing options...
smfort Posted March 15, 2017 Author Share Posted March 15, 2017 It was firing twice on one pull. Link to comment Share on other sites More sharing options...
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