SIG P320 FCU DISASSEMBLY AND REASSEMBLY: Learn how to maintain your Sig P320 FCU

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Our P320 FCU Disassembly and Reassembly Video will walk you through disassembling the Fire Control Unit down to its individual components. From there we walk you through the P320 FCU reassembly.
Normally you do not need to disassemble the P320 FCU however, there are times that you need to maintain the pistol when parts break or wear out. Also, if your Sig P320 was in a flood or submerged in water from a natural disaster, a P320 FCU Disassembly and inspection is critical to make sure that there was no damage.
If you find our videos helpful please consider supporting us for free by using our affiliate banners and links on www.trb.fyi or by donating by becoming a Patron on Patreon / theroguebanshee . Your support helps us continue providing high-quality content.  
Visit our channel for more content on Sig P320 and other Sig firearms and remember to subscribe while you are there.  You can see the complete disassembly and reassembly of the slide and Grip Module here • Sig P320 (Sig M17 and ... or if you have a manual safety, watch that disassembly and reassembly video here • Sig P320 (Sig M17 and ...
For the tools that we used on the Sig P320 videos visit trb.fyi/tools-used-in-the-p320... and visit our troubleshooting guides at trb.fyi/troubleshooting/ while you are at our page.
#P320 #FCU #Sig
Video Index: 
index - 0:00
How to remove the P320 trigger and trigger bar - 0:01
How to remove the P320 Slide Catch Lever - 1:27
How to Disconnect the P320 Takedown Safety Lever - 2:18
How to remove the P320 Sear and Safety Lifter - 3:07
How to remove the P320 Sear Housing - 4:58
How to assemble the P320 Sear Housing - 6:09
How to install the P320 Sear Housing - 6:52
How to install the P320 Safety Lifter and Sear - 8:10
How to install the P320 Takedown Safety Lever - 11:38
How to install the P320 the Slide Catch Lever - 12:15
How to install the P320 Trigger Bar and Trigger - 13:07
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Credits
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Credit: Jason Schaller
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The products (videos, articles, pictures. etc.) available through The Rogue Banshee (including gear, tools, products, etc. that are featured, seen or used) are for informational and entertainment purposes only. All activities are completed in accordance with all local, state and federal regulations, as well as in a safe manner in approved locations with professional supervision.
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Опубликовано:

20 июл 2024

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Комментарии : 148

@Big_D39 5 лет назад

I found exactly what I was looking for, in great detail, by watching this video. Definitely subscribing. Thank you!

@TheRogueBanshee 5 лет назад

David S I am glad the video was helpful. Thanks for watching and subscribing!

@Wicaeed1 2 года назад

The ONLY video I've seen so far that details the fact that the trigger bar main spring + assembly does NOT in fact stay behind the safety housing, but needs to go in front of it AT THE SAME TIME/WHILE you are pushing the trigger all of the way into the FCG housing and rotating it forward

@TheRogueBanshee 2 года назад

That is a tricky part for just about everyone to get! Thanks for watching

@Ask_the_neighbor Год назад

My m18 Thank’s you ! Probably the best informational video on the Internet regarding the P320 disassembly and reassembly of the FCU system. Cheers 🍻🍺🍻🍺🍻🍺

@TheRogueBanshee Год назад

Glad it helped. I also have a video on the m17/m18 fcu with the safety as well

@strastechnology 5 месяцев назад

Exceptional quality of instructions, detailed and simple at the same time. Bravo.

@JL2135 5 лет назад

I have to say that this is the best instructional video I've ever seen. Whomever is instructing must be a full time instructor. Outstanding. Thank yo.

@TheRogueBanshee 5 лет назад

Thanks for watching! I am glad you like the video. It is not so much as instruction as it taking time to do the video right. It took us about 40 hours to do this video with editing and voice over.

@SpartansBAR 5 лет назад

This video is so much easier to understand, and broken down in such a way that you can go step by step along with the video. Thank you so much TRB for doing this for us. Others make the task look daunting, this makes it look easy.

@TheRogueBanshee 5 лет назад

Thanks for watching and I am glad you found it helpful! Don't forget to subscribe.

@MurdamittenG 3 года назад

If you don’t work for Sig they better hire you! Those clear, step by step, easy to follow and understand directions for that fcu just sold me on buying a P320 kit. Nice job man lol.

@TheRogueBanshee 3 года назад

Glad you like the video! I don't work for Sig... but maybe I should apply? Thanks for watching and I am glad it helped you out.

@MaDoMcCormack Год назад

WOW, thank you. I just rebuilt my trigger assembly on the first try. Great video.

@TheRogueBanshee Год назад

Glad it helped. Thanks for watching.

@TheGeenat 3 года назад

All I can say is THANK YOU. the gun has been sitting on my table for a week because I decided to be mr do-it-yourself and switch out my trigger. What a nightmare. But I followed your instructions and it went back together flawlessly.

@TheRogueBanshee 3 года назад

Thank for watching! I am glad it helped out.

@alankeller 11 месяцев назад

Outstanding video. You do a far better job than any other I could find. Thank you!

@sonh788 Год назад

Finally an American who pronounced the word lever correct. (Lee ver) instead of (le ver)

@TheRogueBanshee Год назад

To be completely honnest... the other way pops out sometimes too :)

@norm7081 5 лет назад

Great video and excellent camera work! Thank you!!!

@joshuasimpson1515 Год назад

Wow thank you, one of the safety pins popped out of mine and I was STRESSING 😂 Got her back in pretty easily

@Twi244 2 года назад

Incredibly useful video for my agency arms trigger install.

@snelmica 4 года назад

That trigger bar was always a pain. The way you reassemble that is perfect and easy to repeat. Thanks!

@TheRogueBanshee 4 года назад

Glad it helped you out. If you think the P320 Trigger Bar is a pain... wait until you see the P365 (video in the works now) Thanks for watching!

@MrVulcan1963 5 лет назад

Just bought a P320 today. Great video, well thought out, good camera work-well done.

@TheRogueBanshee 5 лет назад

Thanks for watching and glad you enjoyed it! Check out my Full30 Channel for content that is not allowed on RU-vid. www.full30.com/channels/theroguebanshee

@TheRealBiggDeal 3 года назад

Great video. I was able to follow along and build my first P320 FCU. I have factory assembled P320's but my build will always be special to me. Thanks

@TheRogueBanshee 3 года назад

I am glad that the video helped you out. Thanks for watching and leaving a comment! Don't forget to share!

@nomadiccuban1605 4 года назад

Great video, detailed, clear, and pro quality for the fire control group dis and reassembly. good work!

@TheRogueBanshee 4 года назад

Thanks. Glad you like the video.

@vxvblackoutvxv5545 4 года назад

Exceptionally video! Thank you for taking the time to develop the right video for the job. Reassembling the trigger is spot on!

@TheRogueBanshee 4 года назад

Thanks for watching! Glad you liked the video.

@tnm140 4 года назад

I went to sig armorer class for work, omg they taught it with everything upside made very very confusing. They should’ve just showed your video. Without a doubt the best video on this .

@TheRogueBanshee 4 года назад

Thanks for watching @tnm140 glad you liked the video but sad you had a bad experience for class. It sucks when good money was spent on training and you don't get a lot out of it.

@tnm140 4 года назад

The Rogue Banshee at leaste it wasn’t my money lol but i think it had more to with me being a Nube. That being said for your video is great thanks again.

@TheRogueBanshee 4 года назад

@@tnm140 No problem. Thanks again for watching and don't forget to spread the word!

@TripleTapHK 3 года назад

That is by far the best way to install the trigger bar spring. Amazing job on this video.

@TheRogueBanshee 3 года назад

Thanks for watching! Glad you like the video and the method I use for the trigger bar.

@nitiphanAIDS 5 лет назад

Step by step, Easily to follow. Thank you so much.

@TheRogueBanshee 5 лет назад

Thanks for watching. Glad you enjoyed it!

@bobbyadams5256 4 года назад

Great video very detailed and clear. The best part is no background music thanks.

@TheRogueBanshee 4 года назад

Glad you like the video. Thanks for watching!

@feudist 5 лет назад

Excellent. This should be how all instructional videos are done.

@TheRogueBanshee 5 лет назад

Thanks for watching and your kind words! Don't forget to subscribe.

@Imbored558 5 лет назад

Incredibly helpful, especially in describing the parts that are no longer used. When buying the fcu kits, I've found that suppliers don't supply a list showing what is currently used and what used to be used. Your guide here helped me greatly with my P320 build and I sincerely appreciate it the simplicity and clarity of the presentation.

@TheRogueBanshee 5 лет назад

Thank you for watching and I am glad you found the video helpful. Congrats on your build! You will have to send me a picture.

@GorillasGuns 4 года назад

Excellent and finely detailed explanation, I definitely thank you for this, now I feel as if I could , while watching this, disassemble, clean and reassemble mine..

@TheRogueBanshee 4 года назад

Glad you like the video brother! Thanks for watching

@ellissmithjr6599 4 года назад

Awesome video,Great Demonstration 👍😎🇺🇸

@TheRogueBanshee 4 года назад

Thanks for watching and I am glad you enjoyed the video!

@mikebush8577 4 года назад

This is a factory quality video. Well done!!!!

@TheRogueBanshee 4 года назад

Thanks for watching!

@tommyfjellstrom8660 4 года назад

Great details. Was a very good help to me.Thanks

@TheRogueBanshee 4 года назад

Glad you found it helpful! Thanks for watching!

@Dmitriy60 4 года назад

Thank you very much for your time. Great video !!!

@TheRogueBanshee 4 года назад

Dmitriy60 thank you for watching. Glad you liked the video!

@MrHeavy466 5 лет назад

From nerve wracking to simple; thank you for the video.

@TheRogueBanshee 4 года назад

Glad you found the video helpful! Thanks for watching!

@billbrinias 4 года назад

Great informative video. Why would anyone give it a thumbs down?!? Thank you for taking the time to put this together.

@TheRogueBanshee 4 года назад

Glad you like the video. Thumbs down can be anything, the video is competing against another content creator, someone who hates guns, grumpy person, someone doesn't like me, etc. I don't worry about those anymore. Thanks for watching and taking the time to post a comment!

@Dmitriy60 4 года назад

Great Video. I would say just the best. Thank you very much.

@TheRogueBanshee 4 года назад

Thanks for watching. Glad you like the video!

@SuspiciousGanymede 5 лет назад

I assembled my p320 incorrectly when switching grip frames and had to take the FCU apart to get it unstuck. I had a pile of parts until i found this video, thank you.

@TheRogueBanshee 5 лет назад

Glad it helped you out. Thanks for watching and don’t forget to subscribe.

@grimee4745 3 года назад

You saved me man thank you so much! Awesome video

@TheRogueBanshee 3 года назад

Glad to hear that the video has helped you out. That's why I do them! Thanks for watching and leaving a comment!

@767dag 4 года назад

Best Video yet , thank you

@TheRogueBanshee 4 года назад

Glad you liked it and thanks for subscribing!

@8404Docb 2 года назад

Great video. Was able to follow along and still have a perfectly functioning pistol with no extra parts. :)

@TheRogueBanshee 2 года назад

Awesome. Glad you found the video helpful! When I was kid I used to always have extra parts when I took things apart :) I think I could have saved Huffy a bunch of money on parts that they didn't need on their bikes.

@GuiCury92 4 года назад

This is the most detailed video.

@TheRogueBanshee 4 года назад

Caught somewhere in time thanks for watching. Glad you enjoyed it. Don’t forget to subscribe so you don’t miss the next one that I am working on right now.

@kassenz 5 лет назад

Wow! Great job! Appreciated!

@TheRogueBanshee 5 лет назад

Thanks for watching Kris! Glad you enjoyed it. Don't forget to spread the word and subscribe.

@garytobin5120 5 лет назад

Excellently done ...armorer quality

@TheRogueBanshee 5 лет назад

Glad you enjoyed it and thanks for watching!

@vegas7105 Год назад

Thank you so much!!

@TheRogueBanshee Год назад

You're welcome!

@72polara 5 лет назад

Thank You!!!!!

@TheRogueBanshee 5 лет назад

Glad you liked it! Thanks for watching and spread the word.

@Hurricanepistol 5 лет назад

Very helpfull

@TheRogueBanshee 5 лет назад

Son Baird thanks for watching and subscribing! Glad you found it useful!

@orlandomendoza2641 5 лет назад

Thank you

@TheRogueBanshee 5 лет назад

Thanks for watching!

@craiglawrence7576 3 месяца назад

Thanks!

@TheRogueBanshee 3 месяца назад

Glad you like it and thank you for the donation!

@JDL_2020 4 года назад

Very nice video. Can you do a P320 FCU with safety video? Thanks.

@TheRogueBanshee 4 года назад

It's amazing how many requests that I get now that the M17 and M18's are out. I would love to do another video, just need to get my hands on another FCU that has a safety.

@Worldoversea Год назад

Great video. Is there an easier way to remove the disconnector to change it out for another without taking all the initial steps on your video? Thanks

@thefleaflop 10 месяцев назад

❤Hi, great video.... My take down lever is a bear to rotate. I determined its the forward angle of the safety lever putting forward pressure on the barrel of the tdl. Is there any fix for this other than lube and wear on the parts?... Thanks.

@Joshua-lp8jj 4 года назад

Legit!

@TheRogueBanshee 4 года назад

Thanks

@WARPSPD 4 года назад

At 5:10 you say that Sig no longer uses the safety lever spring in some of their 320's. Do you know why?

@TheRogueBanshee 4 года назад

Unfortunately, I do not. Thanks for watching!

@Q.Lawrence 4 года назад

How many of these internal parts are interchangeable with the .45? I'm seeing that the only difference That I'm seeing from looking at parts online is the slide catch. Is that right?

@TheRogueBanshee 4 года назад

That will be a future video.

@Q.Lawrence 4 года назад

@@TheRogueBanshee sounds good. Thanks.

@tfabela1680 2 года назад

Before disassembly, the safety lever would move with each trigger pull. After reassembled, the lever no longer moves and stays in the down position. I reinstalled the small spring but with no spring tension. You mentioned some p320's don't even have it. Is my pistol still reliable?

@tfabela1680 2 года назад

On further inspection, safety lever goes up but not down on its own. I guess the slide cycling pushes it down. I can hear the firing pin work when dry firing. Thanks in advance for any feedback.

@bad550me 4 года назад

Can you help me with my 320 fire control unit suck on slide can't reassemble couldn't get take down lever back in hole blocked help

@TheRogueBanshee 4 года назад

That's kind of a problem that I would need to have my hands on the firearm to troubleshoot. Did you put your FCU on the slide without the takedown lever in place?

@abundajaya Год назад

Hi man, can you tell me where i can buy the 80% sig p320 fcu? Or can i buy it from you? Please let me know. Thanks

@TheRogueBanshee Год назад

I don't sell guns or parts and listing places that you could get one would be against RU-vid policies. Sorry.

@Braindoner101 4 года назад

Hi, just bought my kit. What tools would you recommend I get to help with the small parts installation like springs?

@TheRogueBanshee 4 года назад

Here is an article that I wrote about what tools I used and at what step. trb.fyi/tools-used-in-the-p320-disassembly-and-reassembly-videos/

@Braindoner101 4 года назад

The Rogue Banshee hi again, so my kit I noticed it doesn’t have a safety lifter spring is that ok or should I order one? Also I think i noticed when I put in the sear pivot pins and try to continue the safety lifter pin and sear pivot pin can easily fall free. Is that normal?

@TheRogueBanshee 4 года назад

@@Braindoner101 Sig has done away with the safety lifter spring. I speak about that at timestamp 9:02 in the video. I really haven't had the pins fall out once installed. If I have some time, I will go play with one of mine to verify.

@Braindoner101 4 года назад

The Rogue Banshee thanks. I’m not sure if I’m doing it incorrectly or not so I thought I’d ask.

@Braindoner101 4 года назад

The Rogue Banshee Good news! I finished my FCU! Your video was amazing and very helpful.

@MaddmaxxxRc 5 лет назад

Hey where can I get all of the fcu parts at?

@TheRogueBanshee 5 лет назад

It would be against community guidelines for me to list where to purchase the parts. I am trying to keep this channel as long as I can. Sorry. If this was my Full30 Channel I would be able to answer your question directly. However, check out my article at trb.fyi/p320-80-build-adventure/ at the end it lists where I bought my parts and what I paid.

@TacomaRAV4Lover 4 года назад

i was on 1:13 and i CAN NOT push the trigger forward. it was tight and barely moved. Should i force the trigger to move forward? i followed the instruction from the beginning but at 1:13 i can not push the trigger forward. What went wrong?

@TheRogueBanshee 4 года назад

It sounds like the back is not clearing the safety/sear housing before you are pushing the trigger forward. Double-check that you have pulled the back of the trigger bar clear of the safety/sear housing.

@TacomaRAV4Lover 4 года назад

@@TheRogueBanshee i found a similar video and instead of pushing the trigger forward, i pulled the trigger bar to the left and for any reason it worked for me. I actually like your video better. i did not go any further yet. After i removed the trigger i was able to clean some tight spot and put it back together. Next time i will strip the whole thing.

@whydotheathensrage 2 года назад

argh, the nub on my trigger tends to pull out of the trigger bar... any ideas ?? thanks glue, tape, bubble gum :)

@TheRogueBanshee 2 года назад

factory trigger?

@whydotheathensrage 2 года назад

@@TheRogueBanshee no, it came as a kit build for mup1, this was my first build, i roughed it up a bit, trying to salvage it, thanks. Idk, may grab an apex trigger, this one seems to have limited range of movement.

@mconeyjr 4 года назад

Is the FCU universal? Dode it work with any pistol?

@TheRogueBanshee 4 года назад

The P320 FCU is specific to the P320 and cannot be used in any other pistiol.

@mconeyjr 4 года назад

@@TheRogueBanshee where do you get other fcu's?

@TheRogueBanshee 4 года назад

@@mconeyjr The FCU is specific to Sig pistols. The P320 has an FCU and the P365 has an FCU. I cannot post links to sites that sell them since that will be against community guidelines. You might want to check out the article that I wrote on our website that talks about building the P320 80%. It talks about where I got my parts from. trb.fyi/p320-80-build-adventure/

@jackomalley3687 4 года назад

Awesome but I cannot get the take down safety lever in. Too long

@TheRogueBanshee 4 года назад

I have never seen one too long. Is it the front or back that you are having problems with?

@jackomalley3687 4 года назад

@@TheRogueBanshee hi I figured it out and the one thing these videos, i mean all of them they skip the part that says the slide stop release should be removed before trying to install and remove the take down safety lever. but great video especially towards the end where you show how to remove the sear housing. I had to do that because i gummed up the take down safety spring when I tried to pull the spring back with an ice pick. No matter how hard I tried to slip and angle the take down lever it would not allow enough room

@jackomalley3687 4 года назад

@@TheRogueBanshee I figured it out. You have to remove mag slide catch first

@yuibot5998 2 года назад

That sure is a lot of extra parts that can break compared to a Glock.

@TheRogueBanshee 2 года назад

There is no doubt that there are more parts than a Glock... but trust me... there are guns with a whole lot more parts than this. Thanks for dropping a comment and watching!

@sthompson5254 4 года назад

I've watch 3 different videos of them doing this, and I can't get this to work. I put an apex on mine 2 years ago and didn't have this much trouble. I'm trying to put the factory trigger back in to send back to sig for the upgrade, and they're getting it in pieces. I build ARs and mess with guns all the time, and this has to be the worst engineered thing I've ever dealt with. No wonder peoples are going off for no reason. I love this pistol, but this is stupid.

@TheRogueBanshee 4 года назад

What part are you having problems with?

@TheRogueBanshee 5 лет назад

Thanks for watching! Don’t forget to subscribe to our channel and visit www.trb.fyi for additional content

@tecmoney6568 2 года назад

✊🏽💪🏽💯👉🏽💥💥💥💥

@TheRogueBanshee 2 года назад

Thanks for watching!

@tecmoney6568 2 года назад

@@TheRogueBanshee no problem, great video to add to my playlist 4 this next project

@tonycolca2241 8 месяцев назад

It would be a lot easier to just throw the qhole thing in the trash. Rather than disassemble it and then throw it in the trash

@nfluondabeat3962 5 лет назад

Why would u need to do this? No trolling intended

@TheRogueBanshee 5 лет назад

I don't see trolling in your question, it is a good question. Generally, you do not need to disassemble the FCU. If you need to replace a part or fix your gun, you will need to know how to get to that part and put everything together again. Thanks for watching!

@brassmule 11 месяцев назад

If your FCU components - specifically the sear spring lifter, the safety lifter, and the sear, especially with CUPS for the two springs - look like this video, CALL SIG IMMEDIATELY and do not use your firearm. It is NOT safe!

@TheRogueBanshee 11 месяцев назад

Where are you reading/seeing this information? I would like to personally investigate that claim that it is not safe.

@brassmule 11 месяцев назад

@@TheRogueBanshee It's related to several ADs - not NDs but ADs - from the Sig discharging without the trigger being pulled or the firearm being dropped. The internals were all updated separately from the "voluntary update" for the drop safety issue. I don't think I can provide the link without my comment being removed by Youtbe, but if you google "New 2 July 2020 SIG P320 Lawsuit and P320 Concerns pistol forum" the first hit should be a very long forum thread with detailed posts that document the changes Sig has iterated over time. The cupped sear in particular is at least two revisions old now and may be the most dangerous part since it is associated with two known NDs. It's advised for Sig p320s with outdated FCU components or outdated striker assembles (See Sig Armorer's Updated Parts Reference WP016) to send the gun back to Sig for replacement components. Most likely Sigs to be affected are ones produced before 2020. These are the parts that Sig blames for a few confirmed ADs where Sig made the owner sign an NDA after it was fixed and is separate from the "voluntary" update related to drop safety.

@brassmule 11 месяцев назад

@@TheRogueBanshee Hopefuly my reply came through. Excellent video, otherwise, and you helped me document and reassemble my FCU components so I can get it updated by Sig.

@brassmule 11 месяцев назад

@@TheRogueBanshee Your striker assembly is also outdated per WP016 but that's related to the angled hook that connects to the updated disconnector, which the p320 in this video doesn't have either. I would be very careful about this firearm until it gets updated.

@TheRogueBanshee 11 месяцев назад

@@brassmule I got the reply but I am still wondering were to find the information you are referencing. A google search on Sig WP016 results in nothing useful. This is an original FCU that went through the "voluntary upgrade" so yea... it is old.