Field Strip: Sig Sauer MPX K (w/ barrel & gas piston removal)

[@ChasingtheDreamRV]

Excellent video, great presentation 👍

[@thetexasgunvault]

Many thanks! I am glad you enjoyed it.

[@jimjamjujugaming4640]

Straight and to the point Video. Definitely help me in my disassembly of my MPX K.

[@thetexasgunvault]

I am so glad it helped. It is why I made it.

[@julianc2789]

A very good job of the whole process of breaking down the Sig MPX and reassembling it!

[@thetexasgunvault]

I am glad I could help!

[@ccwingnut]

Thanks! Just the video I was looking for to guide me through this with confidence

[@thetexasgunvault]

I am glad I was able to help!

[@christopheranthony7644]

EXCELLENT. EXCELLENT VIDEO 👍🏻. Thank you.

[@thetexasgunvault]

Glad you enjoyed it!

[@delam]

Thanks for the detailed breakdown. One minor detail - I noticed at 4:15 when you took the cam pin out, the divot was on the bottom. When you put the cam pin back in, at 10:55 the divot was facing up. I don't know what difference this would make but the cut out in the cam pin would be at a different angle.

[@thetexasgunvault]

The cam pic can only on in when the firing pin is going through it. It really does not matter.

[@josephoxandale]

Very helpful, thank you.

[@thetexasgunvault]

Glad it was helpful!

[@chuck1388]

Excellent visual and explanation. I am a new MPX-K owner. I really enjoy using it. Your video gave me confidence to disassemble and clean it. Thank you again. Well done. Best regards.

[@thetexasgunvault]

You are very welcome! I am glad it helped you. It is why I enjoy making them

[@kidkong637]

Excellent video and thank you for keeping things apolitical! 😊

[@thetexasgunvault]

You are very welcome!

[@lovesosa4926]

@@thetexasgunvault What’s the the yellow tool you where hitting with rubber hammer

[@BIGTOAST187.]

Great video, thank you

[@thetexasgunvault]

You are very welcome

[@bigjoker4u]

nice presentation sir

[@thetexasgunvault]

Thank you so much

[@AdamH-n3l]

How many rounds should this be cleaned after? And if suppressed does it need more frequent cleaning than unsupressed?

[@Joe-hz1nw]

I’d say every 1,000 rounds or so and you’d be fine. I do every 500 or so and it’s pretty easy.

[@kucelkj]

Thank you, friend!

[@thetexasgunvault]

Any time!

[@Ice-uc7qg]

Thanks Bro

[@thetexasgunvault]

You are very welcome

[@MrWoolee]

Great video. No oil??

[@thetexasgunvault]

Sure, but I didn't mention it in the video.

[@jfo8884]

I was wondering that myself.

[@benkochpitching]

REALLY appreciate this video as a NEW MPX owner....GREAT gun, amazing, and breakdown and cleaning is well worth it ! Question......~how many rounds per cleaning would you estimate ?

[@thetexasgunvault]

You are very welcome. I would say every 500 to 700 rounds for me. But I am OCD and love my guns clean.

[@fredrikboqvist8039]

how hard do you tighten the screws that attach the barrel?

[@thetexasgunvault]

Snug but no overly tight.

[@corruption2.066]

@@fredrikboqvist8039 manual said 30 inch pounds

[@corruption2.066]

Did your extractor come with an o ring in it?

[@thetexasgunvault]

I believe so.

[@corruption2.066]

@ I ask because I heard the newer ones do not come with one. I’m having some issues with the bolt not fully returning to battery from time to time. Some people say that removing the o ring has fixed the issue for them. Just curious if yours had one, thanks

[@jfo8884]

What happened to using a torque wrench on the barrel bolts? Great video very informative. Thanks.

[@thetexasgunvault]

Aa long as you don't over tighten them you will be fine.

[@jfo8884]

@@thetexasgunvault Some accuracy issues people have had were from the barrel bolts not being torqued correctly. I personally will continue to use the torque wrench and read Sig’s current user manual since the torque spec has changed 3 times for these bolts.

[@The1Mathieu1]

Is there a specific oil or cleaner you use? Best break down I've seen for this weapon. Liked

[@thetexasgunvault]

Thank you! I currently use the Lucas Oil Gun Oil.

[@The1Mathieu1]

@@thetexasgunvault Thank you sir.....ordered

[@Ezenyo]

Please make a lubrication video on this!!!

[@thetexasgunvault]

I no longer have this one in for review, so I can't. I am sorry.

[@williamwinn948]

love my mpx k. One of the funniest guns and my Wife who has fibromyalgia has a much Easier time shooting it then a Regular handgun

[@thetexasgunvault]

Thanks for watching! I am sorry to hear about your wife.

[@Nonyabusiness911]

How often for the cleaning of the gas piston. Number of rounds?🤷‍♀️

[@thetexasgunvault]

I think they say 1000.

[@lovesosa4926]

What’s the the yellow tool you where hitting with rubber hammer

[@thetexasgunvault]

It is just a standard metal punch.

[@miles267]

Appreciate this video. Would like to pick up some extra MPX K firing pin retaining pins (cotter pin) to have on hand for future cleanings. Not an easy part to get reinserted. Can definitely see this becoming damaged or lost with frequent cleanings. Where can it be purchased from?

[@thetexasgunvault]

You might try Sig, or Brownells. Maybe even Numerich.

[@MikeHoxafloppin]

I was just about to say there's a parts breakdown on page 96 of the manual, but it doesn't tell you a part number. I found the part number 1700005-R on Brownells, but they're out of stock. Optics planet has them in stock. It's the correct part number, but the picture on optics planet is wrong. I would probably call and confirm before hitting the order button. I got my mpx last night, and didn't break it down that far yet, but I'm very thankful I read your comment. Having extra firing pin retaining pins is a great idea.

[@miles267]

@@MikeHoxafloppinthanks. I’ve contacted OP to verify which Sig part they are actually selling under that PN. More to follow.

[@mattwalters6834]

I may have already asked this; do you have to disassemble it down this far or just after putting so many rounds too clean the piston.

[@thetexasgunvault]

No, but you will need to take the the handguard off.

[@larryp4055]

What oil and where to put it

[@thetexasgunvault]

I use basic oils like Lucas. I oil the friction spots on the carrier

[@duenyaohsieh4856]

How do you remove the dust cover

[@thetexasgunvault]

I do not have this in for review anymore, but I assume it is like an AR-15.

[@jordycruz6661]

I went with a ptr over this just because it was easier to take apart and reassemble for cleaning lol on top of being a soft recoil pcc

[@thetexasgunvault]

I can understand that point of view.

[@69wdforty]

That bolt carrier is completely different than the one in my MPX. I have a gen 3

[@thetexasgunvault]

Very interesting. I hear they are changing things up all the time in these.

[@nick3777]

This was awesome! The sig mpx barrel comes with adjustable gas block or do we have to get one from ILWT?

[@thetexasgunvault]

They are not adjustable.

[@Tap_rack5.56]

Not sure why yours has issues removing the firing pin and cam pin when dirty, mine come right out if not tap it on the table and it falls right out (for the firing pin) cam pin comes right out too 🤔

[@thetexasgunvault]

Very interesting. I do not know why either.

[@jimsworthow531]

Thanks for the video friend, but crazy you didn't use any solvent upon disassembly or any oil upon assembly instead of hammering on it.

[@thetexasgunvault]

Well, I usually clean and oil these off camera. I try to keep them to the point.

[@AtlantaPrin]

What optic is that?

[@thetexasgunvault]

It has been awhile since I reviewed that gun. I think it is an aimpoint acro

[@McClutchin941]

I have a gen 3 mpx k and was wanting to purchase a radian raptor CH I’ve heard some people say it scrapes the receiver, is this true ? Or maybe it was just a problem with older gen mpx models cause it looks sweet and I’d love to upgrade the Stock CH to Radians but it seems the problem is the bolt is having trouble closing all the way with a mag inserted I never had this problem with the stock Charging handle and I obviously recently removed the bolt and CH to install the Radian one

[@thetexasgunvault]

I have not heard about or experienced those issues

[@McClutchin941]

@@thetexasgunvault thanks so much gonna order one now haha cause it seems like these are hard to come by in 2023 today the company emailed me and said fde and gray are discontinued

[@McClutchin941]

Back again unfortunately I installed the radian raptor charging handle and I’ve on mine I see scraping all along the top of the handle right on the logo not sure if this is normal and using the radian I have to pull the handle back with more force and release it all the way back for it to chamber the round correctly if the mag is inserted in the mpx and I try to rack it back I have to do it with force as well… if the mag is inserted and I use the bolt release to close it it chambers no problem it’s very weird, also I have no lifter or anything on my radian Handle my mpx is gen 3 and I’m using the new sig mpx mags… do you think I could have possibly put the bolt in wrong with the ejector not all the way forward or do I just need to oil the shit out of this radian CH very confusing may take it to my local gunsmith/store see what they think I didn’t experience any of these problems with the stock CH

[@w0lf1969]

@@McClutchin941 can you tell me how it's working after using it for some time? Any issues? Scraping?

[@petez470]

Why not take off the optic?

[@thetexasgunvault]

I did not see the need.

[@Boringunguy]

I have an mpx and love it. But mine is better lol

[@thetexasgunvault]

LOL

[@hamsandwich1860]

Thats a pretty messy way for a gun to be put together.

[@thetexasgunvault]

I could see that.