mpx

Hello everyone, I’m looking to replace the original flash hider on my MPX copperhead midnight edition with an ASR flashhider for suppressor use and am having problems doing it. I put my upper in my “no mar” AR upper receiver vise and after putting what I thought was quite a bit of pressure with...

Factory gen2 MPX barrel shortened to 7" threaded in 1/2x28. Cerakoted barrel extension that screws on to make a 16.5". Extension can be pinned and welded for non SBR guns. No piston or gas plug in barrel. Located in East TN Asking $350 paypal F&F (friends and family) shipped.

Not sure if this is the right forum, so please forgive me if it's not. Does anyone have experience using the Leupold Freedom RDS red dot on their MPX? I currently have a Romeo 4S with the Juliet magnifier. Someone mentioned that I would eventually drop the Juliet, and now it seem a bit...

I SBR'd my MPX and no longer need the original carbine length barrel or handrail. They've seen about 200 rounds, maybe less. Both in excellent condition. $400 for both. Prefer pay by Zelle. Items are in Las Vegas/Henderson, NV area. Will ship at your expense. Thanks for looking.

The only thing constant in my collection is change. That’s not entirely true, but I do have an updated set of parts that I’d like to pass along to someone else that might need them more than I do (since they’re just sitting in a box here). Sig MPX Factory ambidextrous charging handle, Gen 2...

Black PCB "swivel brace" off of my MPX. Been to the range once, so it's got a few normal handling marks. This should fit anything with a 1913 rail interface at the back. Yours for $140 shipped. PayPal gift (no comments in the payment) or add 4%. Located near Portland, OR. PM me if you are...

Selling off my 8" Keymod MPX Handguard. I went a little overboard picking up different handguards because of how easy they are to swap out, and I need to pare it back down to a more manageable pile (since I only have one MPX). If you've got a "K" pistol (4.5" barrel), you can fit this over most...

Ok I have some really nice guns. Some historically significant pieces and some really fun stuff. I haven't been this excited about a new gun in a while. This wasn't even on my radar as a want or need. Just a cool gun that I wish I had when I lived a more dangerous life. Given current events I...

I picked up another sig mpx k today and I am a bit confused. It is the fde mpx k and it has the m lok handguard but it doesnt have the timney trigger. It was said to be bought in November 2019 from modern sportsman. I know sig doesn't officially have a gen 1-3 but what is the best way to tell if...

I just got a sig mpx gen 2 with the mlok handguard and have a silencer co asr flash hider for it I noticed the barrel has a tapper so do I need a taper adapter part to install the asr flash hider?

I'd like to move my MPX-K to my bedside for home defense. I have a 320rx now in a little Vaultek tucked neatly in a sliding nightstand drawer. My constraints are: Wife doesn't want a big ugly safe in the room (think pottery barn magazine for bedroom layout) I have 6 year old son that is a...

SOLD: Sig Sauer MPX Gen2 Handguard Handguard is factory Gen 2 Good condition overall. Asking $100 OBO shipped in the Cont US. PayPal F&F or PayPal+fees or Google Pay or Money Order or Zelle. I'm located in the Tampa Bay Area Note: barrel has been sold already

I have a sig mpx gen 2 4.5" from 7/29/19 and I was wondering how can I tell I have the most updated parts for reliablity? I've seen so many changes between it and the newer "gen 3" with m lok.

Selling an SB Tactical MPX PSB Replacement Brace. Excellent condition. Converts the factory PDW stock to a brace. Link to description on SB Tactical's website. 40 shipped. I can accept just about any form of online payment, but prefer to avoid PayPal whenever possible. Payments must...

So I've put on a Sig Romeo5 red dot, a TLR 7 white lights, and the smallest green laser I could find which happens to be made by TruGlo. But....the laser block at least 1/3 of the light throw. Should I put a riser on the red dot, then the TLR 7 too, or just accept some light blockage in the name...

Hi guys, I just got myself an MPX K with a folding brace. I want to get a backpack for it. Apparently all the Sig made backpacks are sold out everywhere. Can you guys recommend me a backpack? Something not too big. just something to take to the range and back. Thanks!

Does anyone know if an SRD9 will fit inside the handguard of an MPX PCC? I have the mpx pcc and I want to sbr it, get a shorter barrel and run an SRD9 suppressor under the standard m-lok handguard but I’m not sure if it’ll fit. The diameter of SRD9 says 1.38” and measuring the inside of the...

Howdy Folks, new Sig Owner here ... happy about that :D. California resident ... sad about that :( So I have to do a fixed mag on my new Copperhead. I purchase a fixed magazine from bulletbutton.com: https://www.bulletbutton.com/product-p/mpxpmr.htm White they were responsive and confirmed...

I picked up a used mpx gen 2 and it looks like it has the updated firing pin with the groves in it and I hope new bolt to match but dont know how to verify that. I saw someone mention that they changed the Tappet/gas valve is that true? If so how can I make sure mine is up to date on the rolling...

I'm thinking of put a Trijicon MRO on a MPX and I'm considering LaRue Tactical mounts. There are two options, LT839 and LT849, both are described as 1/3 cowitness with the iron sights on M4 carbine and AR-15 flattops. The only difference I see is that one is cantilevered forward. I'm not sure...