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9/8/2015 1:31:02 PM EDT
like can you puut an aftermarket ar trigger in an mpx?  also, what about the pistol grip.

also, those things are a bit heavy arent they.
9/8/2015 1:46:18 PM EDT
[#1]
Yes and no, it supposedly voids the warranty to use anything but the factory trigger group.

Yes, but some with a tall web may require some fitting.

Yes, they are pretty chunky for their size.
9/8/2015 1:55:34 PM EDT
[#2]
https://www.youtube.com/watch?v=AVzu-ja6FI0#t=300
9/8/2015 4:10:32 PM EDT
[#3]
I'm an MP5 guy, but I gotta say after holding one of these it's pretty damn nice.  

9/10/2015 9:19:04 AM EDT
[#4]
They will take an AR trigger. It does void the warranty so make sure you keep the old one around. Sig said the recoil system batters the fire control group so they put in a "trigger bar" to protect it.

Bill Geissele says his triggers will stand up to it no problem and have a lifetime warranty if they don't.

Waiting 3 months for my Stock from SIG so after that comes the trigger is my next upgrade...maybe a Christmas present to me!

The MPX really does shoot like a dream. No misfires so far in a few hundred rounds and accurate, like all SIGS tend to be.
9/10/2015 10:16:54 AM EDT
[#5]
I put a Wilson Combat TTU-3G trigger drop-in (read contained) trigger pack in mine and it is amazing. It's almost like having a full auto when you bumpfire it. See my little youtube video: https://www.youtube.com/watch?v=glcUbQc7MJ0
9/14/2015 8:38:59 AM EDT
[#6]
From looking at the guard, I suspect it would work on a standard AR style trigger group, but not on the self contained units such as Timney.
9/14/2015 9:06:23 AM EDT
[#7]
Quote History
Quoted:
From looking at the guard, I suspect it would work on a standard AR style trigger group, but not on the self contained units such as Timney.
View Quote


What makes you say that, apparently this fits:

9/14/2015 9:59:07 AM EDT
[#8]
Quote History
Quoted:


What makes you say that, apparently this fits:
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
From looking at the guard, I suspect it would work on a standard AR style trigger group, but not on the self contained units such as Timney.


What makes you say that, apparently this fits:


Sorry, when I said "it" I meant the guard.
Did the Sig guard work with that trigger?
9/14/2015 10:47:23 AM EDT
[#9]
Quote History
Quoted:


Sorry, when I said "it" I meant the guard.
Did the Sig guard work with that trigger?
View Quote View All Quotes
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Quote History
Quoted:
Quoted:
Quoted:
From looking at the guard, I suspect it would work on a standard AR style trigger group, but not on the self contained units such as Timney.


What makes you say that, apparently this fits:


Sorry, when I said "it" I meant the guard.
Did the Sig guard work with that trigger?


Ask the guy above you that has actually used it.
Are you seeing some potential interference with the trigger and the trigger guard?
9/14/2015 11:32:01 AM EDT
[#10]
Quote History
Quoted:
Ask the guy above you that has actually used it.
Are you seeing some potential interference with the trigger and the trigger guard?
View Quote


I'm not sure we're on the same page.

Have you disassembled an MPX trigger?

It guards the trigger assembly from the hammer on harsh recoil, Sig calls it a "Bridge", but it acts as a guard.

I've not tried it with a Geissele trigger (yet), but it at least looks like it would be compatible, which is all my comment pertained to.


9/14/2015 11:33:27 AM EDT
[#11]
Quote History
Quoted:


I'm not sure we're on the same page.

Have you disassembled an MPX trigger?

It guards the trigger assembly from the hammer on harsh recoil, Sig calls it a "Bridge", but it acts as a guard.

I've not tried it with a Geissele trigger (yet), but it at least looks like it would be compatible, which is all my comment pertained to.

http://www.stevejenkins.com/blog/wp-content/uploads/2015/06/mpx-trigger-bridge-black-950x1024.jpg
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
Ask the guy above you that has actually used it.
Are you seeing some potential interference with the trigger and the trigger guard?


I'm not sure we're on the same page.

Have you disassembled an MPX trigger?

It guards the trigger assembly from the hammer on harsh recoil, Sig calls it a "Bridge", but it acts as a guard.

I've not tried it with a Geissele trigger (yet), but it at least looks like it would be compatible, which is all my comment pertained to.

http://www.stevejenkins.com/blog/wp-content/uploads/2015/06/mpx-trigger-bridge-black-950x1024.jpg


Ah you were calling it the guard, SIG calls it the trigger bridge.

People running self-contained triggers are ditching the trigger bridge.  It's useless with light, high-speed hammers, and there is no tail on the hammer to hit the bridge.
9/14/2015 5:22:45 PM EDT
[#12]
I have approximately 600+ through my mpx with a geissele SDE. No issues whatsoever.  Without trigger bridge installed.
9/14/2015 9:36:54 PM EDT
[#13]
No problems with my SD-C. I also use a BCM Mod 2 grip.
9/15/2015 1:18:16 PM EDT
[#14]
Quote History
Quoted:


Sorry, when I said "it" I meant the guard.
Did the Sig guard work with that trigger?
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
Quoted:
From looking at the guard, I suspect it would work on a standard AR style trigger group, but not on the self contained units such as Timney.


What makes you say that, apparently this fits:


Sorry, when I said "it" I meant the guard.
Did the Sig guard work with that trigger?

Yes, everything fits. I never even fired my MPX with the stock trigger. I dropped in the self-contained Wilson combat TTU-3G trigger unit with ZERO modifications. Over a 1,000 rds with not even the slightest bit of damage to the trigger.

ETA: I am not using the Sig "bridge" with the Wilson trigger unit nor do I think it would fit anyway. Doesn't need it.
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