by
Cris,
Verified Owner
from FL, United States
Written on July 13, 2025
This trigger 100% fits in the Sig MPX which I had had the unfortunate luck of purchasing other triggers that did not work. It's quick and easy to install if you have the right tools, the time, and the instructions. Although the instructions that came with the trigger are not extremely detailed, it still gave enough to guide me to installing it with only one minor issue (my error, not the instructions or the trigger). I recommend this is probably the best trigger out there. Smooth, easy to pull, and overall a great upgrade to an already great gun.
Would recommend: Yes
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by
MB,
Verified Owner
from CA, United States
Written on January 31, 2025
The trigger was crisp and quick return of engagement. I would highly recommend this trigger for any MPX rifles.
Would recommend: Yes
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by
king,
Verified Owner
from NH, United States
Written on October 27, 2024
Had a defective one from sig it self, but it seems like the one i got is locked into place and been abused no signs of breakage as of just yet.
Would recommend: Yes
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by
Hammer,
Verified Owner
from NC, United States
Written on July 18, 2024
This is my first time putting in a drop in trigger. While the directions were handy, YouTube it for play by play instructions for those that need a visual reference like me. Only issue I ran into was finding a punch that was small enough to knock the roll pin out for the ambi safety.
As far as the reviews on the pins walking out I feel like people aren’t willing to tighten the screws down all the way. The springs are kind of in the way to access the Allen screw ports and you will need to use a small flathead to move them out of the way. Very, very simplistic. I would recommend anyone with an MPX that is a novice, like myself, to upgrade the trigger before literally anything else on this platform.
Would recommend: Yes
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by
JEB,
Verified Owner
from AL, United States
Written on May 28, 2024
Sig MPX Copperhead has not been shot after installing, but reduced trigger pull and reset is crisp and short: Pull weight dropped from 9.9 lbs to 4.3 lbs and not oiled .
Would recommend: Yes
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by
Zaddy,
from MA, United States
Written on February 18, 2024
Over all its a great trigger, but the instructions to install it were very vague. If you know a think or two about AR platform you should be fine.
Pros:
- Crisp & clean break when firing
Cons:
- Instalation
- Bad instructions
Would recommend: Yes
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by
Tony,
Verified Owner
from FL, United States
Written on January 30, 2024
Ordered one for my MPX. Light years better than the standard trigger that SIG provided with the MPX. Has my gunsmith install although in retrospect it would be an easy do-it-yourself job. Crisp and smooth.
Would recommend: Yes
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by
Mors tyrannis,
Verified Owner
from OH, United States
Written on December 22, 2023
This is in my mpx k and it's titties but the pins didn't stay and needed to wait to use until I had anti walk pins installed
Would recommend: Yes
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by
Rhood306,
from TX, United States
Written on August 10, 2021
I love this trigger. It made my MPX shootable and a great great option to shoot again. The stock trigger for the MPX hard and effected my on target aim. This trigger made shooting the mpx fun again. I found the new Timney trigger to be smooth And easy to install
Pros:
- Easy to install, smooth, great pull weight
Would recommend: Yes
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by
Jason,
from MO, United States
Written on September 2, 2020
Put this trigger in my Sig Copperhead, pulled out old trigger, dropped this one in, put in the pins and tightened two screws, that’s it, 3.5lbs. I would recommend putting these in all guns they will fit. I read a review from a guy saying the pins fall out, yes they will until you tighten the screws that are in the trigger box, they put tension on the pins and I had no issues
Cons:
- None except price but worth it
Would recommend: Yes
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