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1-17 of 37 Results
  1. P250, P320, P320 X-5, M17, & M18 Pistols
    I'm wondering besides the trigger and the color, when compared to a standard FCU how much does the TiN coating actually help prevent wear on the FCU? Does it come off right away, or about how many rounds does it last? I've seen a competition FCU that looked flar instead of rounded on the edges...
  2. P250, P320, P320 X-5, M17, & M18 Pistols
    Looking to put a M17 FCU and Slide into/on a Xfull grip module. Has anyone tried this combo? Besides cutting a notch in the frame (the outline is molded into my frame) is there any other considerations? I’ve seen a few pics online that seem to indicate it would work but cant find specific info...
  3. P250, P320, P320 X-5, M17, & M18 Pistols
    Hey y’all, I’m wondering what the best approach is to getting an FCU. direct from Sig? Or do you guys have other ways to procure them for a reasonable price?
  4. P365
    Hey guys i have p365xl, and removed the FCU OEM to clean it out of the frame. While i was cleaning the internals the slide catch lever felt loose and then fell off. I was able to put it back in place and put the gun back together and works fine shot dry. But every time i take the FCU out of the...
  5. P365
    As a tinkerer, I've dabbled in building many things so when I found out sig offered a modular design EDC, I couldn't resist picking up one of the FCU's and diving straight in. Yes, I realize this will ultimately cost me more money than just purchasing a P365x and modifying, but I wanted the...
  6. SIG Sauer Gunsmithing
    I've decided to piece together a P365X from scratch, starting with a P365 FCU I purchased. Being the first time I've pieced one of these together, I have a quick question about getting started. Once all the parts arrive, should I go ahead and take the FCU apart and give it a good clean/lube...
  7. SIG Sauer Pistols
    Here’s hoping this works: I am wondering if there is a clear and concise source one could go to if they wanted to completely understand how the new Module system for the P320/365 works. I understand that they now have this whole FCU system in place and it opens the floodgates for customization…...
  8. P365
    Does anyone have a photo of a Sig P365 FCU with over 100k rounds through it? I'm curious to see how these hold up.
  9. P250, P320, P320 X-5, M17, & M18 Pistols
    Does anyone have a photo of a P320 FCU with over 100k rounds through them? I'm curious how those hold up.
  10. P250, P320, P320 X-5, M17, & M18 Pistols
    Has anyone shot 45acp out of a 9mm P320 FCU by only swapping or trimming the takedown lever but without trimming back the ejector?
  11. P250, P320, P320 X-5, M17, & M18 Pistols
    I'm pretty excited about the new P320 XTen firearm. But does anyone know if it uses the 9mm FCU or the 45acp FCU? Per Dan Zimmerman from he says it's the 9mm FCU with a 45acp takedown lever, but I've been reading different things on the forums from people who attended the...
  12. SIG Sauer Pistols
    Is there a difference, other than the coating, between a standard FCU of a P320 or P365 and a Custom Works FCU?
  13. P365
    Does anyone know if there is a difference in the custom works FCU vs just the standard black FCU that came in my P365xl? Specifically just talking about the trigger. I heard a comment from someone that it was a bit smoother and lighter, and didn’t know if that was standard.
  14. Gun Projects
    For those of you who have built and used the JSD MUP-01 80%, is it durable, will it last as long as a factory FCU, or does it look kind of like a few uses item?
  15. SIG Sauer Gunsmithing
    Hi, has anyone completed a P320 FCU? I'm curious to know if you can use a hand drill rather than a drill press. Also, some people have mentioned that the included drill bits will not last long.
  16. P250, P320, P320 X-5, M17, & M18 Pistols
    Hi! I'm considering purchasing a Sig P320 because I really like the concept of a modular design. However, because I live in California, I can't get it from an FFL, so it'll be from a private party, at a huge premium over MSRP. Additionally, I spoke with Sig this morning and was told that if...
  17. Good Deals
    P365 complete FCU w/ Flat Trigger installed. Better deal the the curved trigger or other "Custom Works" FCU.
1-17 of 37 Results