Sig Advises against Changing MPX Trigger

We received an alert from our Sig Sauer rep yesterday advising against changing the trigger on the MPX. There seems to be an issue caused by the removal of the trigger bridge which will lead to extra wear and reduce the life of the components. Removing that bridge will void the warranty. Below is the messaging and illustration I received:

MPX Trigger Compatibility The SIG MPX has a fire control group specifically designed to accommodate the high impulse of the MPX operating system. The MPX Trigger Bridge (indicated below by arrow) is in place to reduce wear and extend the life of the factory installed fire control components. Removal of the Trigger Bridge is NOT recommended and will void the warranty of the firearm. While the SIG MPX fire control components are similar to the AR15 platform, and aftermarket fire control components may fit, installation is NOT recommended in the SIG MPX. Doing so may result in damage to the MPX proprietary fire control components or the aftermarket components you installed.

I'm told that Sig will be including this information with all future MPX shipments. Update 9-10-15: On the topic of Sig MPX triggers, here is a video from one of our friends who goes into detail about the trigger and installs an ALG trigger in his MPX.

MPX

Posted in: Sig Sauer

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[…] was originally brought to my attention yesterday through an email discussion with the fine folks at Osage County Guns, who received the following alert from their Sig Sauer […]

Sean D Sorrentino

What about the MCX?

OCG

I have heard no indications that this applies to the MCX. It is my understanding that it is specifically the MPX.

Matthew Meyer

I tried putting a hiperfire EDT in mine. Less than one magazine through it started to double fire. Fires once when trigger is pulled, fires again when released. When I took it apart I found the hammer was hitting the disconnector so hard it destroyed the disconnector spring. Tried putting a new spring into it, but then the gun started going full auto. Threw the hiperfire in the trash, went back to sigs crappy trigger. Waiting for someone to come out with one that really does work, not just puts a guarantee on it. Just like Tommy boy said, if it's got a guarantee, that means it's a guaranteed piece of shit"

EddieVasquez

I have been researching this and looks like a good option is the speed trigger modification from Bill Springfield. I had one done for my AR and I love it.

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Another reason why this Mid-Term election is so important.

Joseph Wong

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Our Store was Robbed!
Or get a couple Dobermans. These punk thugs hate dogs

pcpolice

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Our Store was Robbed!
We are all with you my brothers. I am thankful nobody was killed( excluding the break in crew , they are young to be so reckless. Their day is coming.) Please let me know when I can place place a online FFL order. Of course no hurry, you come first. God bless you and your loved ones.

Keith Kolb USN/ Ret

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Our Store was Robbed!
Are there any updates to the apprehension of these criminals?

Poongee

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We actually installed multiple 2 ton cement blocks at the front just days after the incident... There are other measures that were taken in addition to this but they are not visible and we're not going to advertise them.

Osage County Guns

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