Reviews by Mark in Texas
Great Upgrade for Sig MCX Virtus 300 Blackout Conversion Upper
Written on Jul 24, 2025
Review for
Triggertech SIG Sauer Adaptable Trigger
I added a Sig MCX Virtus 300 Blackout 9" Conversion Upper to an AR15 lower and SBR'd it. The Conversion kit came with a Sig AR Two-Stage trigger kit, however, I found this trigger to be a bit heavy (about 5 lbs.) for my intended use of feral hog huning from a stand.
I replaced the conversion kit's trigger with a Triggertech Sig MCX Adaptable, Flat, 2.5-5 lb. Adjustable Trigger and couldn't be more pleased with the results.
The provided instructions were very clear and the installation was a breeze. After installation, I adjusted the pull weight to 2.5 lbs. The trigger now feels fantastic. I haven't had a chance to fire live rounds yet with the new trigger, but from experience I'm certain my groups are going to be much improved with this trigger.
I highly recommend this updgrade to anyone wishing to replace their factory MCX Virtus trigger.
I replaced the conversion kit's trigger with a Triggertech Sig MCX Adaptable, Flat, 2.5-5 lb. Adjustable Trigger and couldn't be more pleased with the results.
The provided instructions were very clear and the installation was a breeze. After installation, I adjusted the pull weight to 2.5 lbs. The trigger now feels fantastic. I haven't had a chance to fire live rounds yet with the new trigger, but from experience I'm certain my groups are going to be much improved with this trigger.
I highly recommend this updgrade to anyone wishing to replace their factory MCX Virtus trigger.
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