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Questions & Answers
Will this work on the spear LT

Yes, but you can use normal AR triggers so I would just get another one like the ar15 triggertech adjustable diamond 2 stage or single stage depending on what u like. there are really good triggers u can get where this can bring up some small issues but all tolerable. I have this in my spear lt 300 blk. Wish I knew normal AR triggers worked first.

by nick, Verified Owner, November 28, 2024
will this trigger work in a Sig Sauer M400 tread? Expert Answer

The Triggertech SIG Sauer Adaptable Trigger is designed for the Sig MCX. I recommend using the Triggertech AR-15 Competitive Trigger located at the link below for the Sig M400 Tread.
https://www.opticsplanet.com/triggertech-competitive-ar-primary-trigger.html

by Hunter, Gear Expert, April 26, 2022
Customer Reviews
Helpful Positive Review Well designed high quality trigger fir Sig MCX. by WG, Verified Owner, March 27, 2024
The TriggerTech MCX trigger is a super smooth crisp trigger upgrade for the Sig. The adjustable pull provided me the opportunity to get the perfect pull weight I was seeking. Compared with the standard Sig or the Geissele it has minimal creep and sup...
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6/6 found this helpful
Helpful Positive Review Solved my light primer strikes on Subsonic 300 black out ammo. by Joe, September 9, 2021
I purchased this trigger to replace a another branded trigger that gave me light primer strike even after using the stronger spring. This product solved the issue and I plan to equip all my other lowers with this trigger.
10/10 found this helpful
Helpful Positive Review awesome trigger by Paul, Verified Owner, October 25, 2024
Shipping was fast and the trigger lived up to the hype
1/1 found this helpful
Helpful Negative Review Light Strike by jake, February 20, 2021
Purchased this trigger for my mcx virtus in hopes that it would be a great trigger. So far it is not, I’ve been experiencing light strikes with the trigger sometimes back to back. In the process of seeing if there is anything triggertech can do for m...
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8/11 found this helpful
Most Recent Reviews Triggertech for my SIG Sauer MCX by augmeisters, Verified Owner, September 3, 2025
Was a huge difference from the stock SIG trigger. I have two Virtus MCX rifles, .300 BO and .223. Both fitted with night vision. When I sighted them in, I couldn't believe how bad the original triggers were. After studying all the available opti...
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Most Recent Reviews Great Upgrade for Sig MCX Virtus 300 Blackout Conversion Upper by Mark in Texas, Verified Owner, July 24, 2025
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 huni...
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Read All 6 Reviews
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Product Info for Triggertech SIG Sauer Adaptable Trigger

The SIG MCX Trigger is built for top competitive shooters to offer the most accurate and dependable trigger on the market. Featuring Frictionless Release Technology, this drop-in AR trigger has a short, two-stage action, designed to feel like a 1911 trigger, that provides a true zero-creep break, extremely short overtravel, a sub 0.015in tactical reset and offers outstanding reliability, even in the harshest environments. Utilizing CLKR Technology, the pull weight is quickly and confidently adjusted in 2oz increments from a set screw with the trigger installed. Due to there being truly zero creep, most shooters report the pull weights feeling approx. 0.5lbs lighter than a friction based trigger of the same measured pull weight. Changing the pull weight does not affect hammer force so you get dependable primer strikes at every weight. Frictionless Release Technology, along with hardened 440C stainless steel internal components ensure corrosion resistance and an extended service life. As Frictionless Release Technology does not rely on coating, polishing or lubricating the key engagement surfaces, trigger pulls will be more consistent from shot to shot and after thousands of shots than you ever thought possible.image

All pull weights and measurements are approximate.

Specifications for Triggertech SIG Sauer Adaptable Trigger:

Manufacturer: Triggertech
Color: Black
Finish: PVD
Trigger Pull Weight: 2.5 - 5 lb
Trigger Pin Size: Mil-Spec
Hand: Ambidextrous
Gun Make: AR Platform, SIG Sauer
Gun Model: SIG Sauer MCX
Gun Type: Rifle
Condition: New
Trigger Installation Type: Drop-In

Features of Triggertech SIG Sauer MCX Adaptable Trigger

  • Zero Creep: Yes
  • 1st Stage Weight: 0.75lbs - 0.75lbs
  • 2nd Stage Weight: 1.75lbs - 4.25lbs
  • Total Pull Weight: 2.5lbs - 5.00lbs
  • TKR: Yes - Min Overtravel
  • CLKR: Yes - Inc. Adjustable
  • Flat Wire: Yes - Hard Primer Compatible
  • Take Up Distance: 0.035in
  • Overtravel: Sub 0.015in
  • Reset: Sub 0.030in
  • Weapon Platform: SIG MCX (and pump action AR)
  • Warranty: Product Lifetime
  • Housing: 7075 Aluminum (anodized)
  • Key Components: 440C Stainless Steel

Package Contents:

  • Triggertech SIG Sauer Adaptable Trigger
  • Installation Tools
  • Instructions Book
  • TriggerTech Patch

Triggertech SIG Sauer Adaptable Trigger Orderable Models

List of Orderable Models

Triggertech Adaptable Trigger, SIG Sauer MCX, 2.5-5 lb Pull, Flat, Anodized, Black, ARC-TBB-25-NNF , MPN: ARC-TBB-25-NNF , UPC: 885768002288 , Code: 554-TGR-MCXT1-ARC-TBB-25-NNF
Triggertech Adaptable Trigger, SIG Sauer MCX, 2.5-5 lb Pull, Curved, Anodized, Black, ARC-TBB-25-NNC , MPN: ARC-TBB-25-NNC , UPC: 885768002271 , Code: 554-TGR-MCXT1-ARC-TBB-25-NNC
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