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Item Number: TR-ETU-M2
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Detailed Description

Introducing the Enhanced Trigger Unit

We have taken our modular AR trigger units and enhanced their performance with the addition of the most advanced black DLC (Diamond-Like-Carbon) physical vapor deposition finish available. This finish on critical action parts has chromium and tungsten underlayers for long-lasting corrosion and abrasion resistance. This ultra-hard surface finish will ensure that your ETU maintains a smooth, crisp pull when heavily fouled, reduces wear, and resists corrosion from hot powder gases.

  • Exclusive Wilson Combat® Engineering Has Created a Truly DROP-IN Trigger Unit With an Ultra-Crisp 4 - 4.5# Trigger Pull That Does Not Require Any Fine Tuning or Adjustment By The End User.
  • Simple, 1 Minute Drop-In Installation
  • NO Adjustment Screws to Ever Shoot Loose
  • NO Loose Parts to Misplace, The ETU Is a Totally Self-Contained Trigger Module
  • All Components Are Precision CNC Machined and/or EDM Cut From Solid Bar Stock
  • Hammer, Trigger and Disconnector Are Manufactured From Virtually Indestructible H13 Steel and Heat Treated with DLC Finishish For Maximum Wear Resistance
  • Hammer, Trigger and Disconnector Pivot on Hardened Steel Bushings So NO Wear or Stress Is Imparted on Your Receiver Pin Holes or Pins
  • Positive Trigger Reset Guarantees a Quick Follow Up Shot on Target
  • The Unique Hammer Geometry Enhances Reliable Ignition With Military and Surplus Ammunition of All Types
  • Wilson Combat® Exclusive 1911 Style Half-Cock Notch Makes The ETU The Safest AR Trigger on The Market and Allows The ETU to Meet or Exceed Military Specifications For Drop Safety
  • Bullet Proof® Design Is Engineered and Extensively Tested By Shooters For Shooters
  • The Enhanced Trigger Unit Has Raised The Bar in AR Trigger Design and Function…


Exclusive Wilson Combat engineering enables a durable, 4 - 4.5 lb., ultra-crisp trigger pull without any fine tuning or adjustment. Reduced, positive trigger reset guarantees a quick follow up shot on target. The unique hammer geometry enhances reliable ignition with military and surplus ammunition of all types while a 1911 style half-cock notch allows the ETU to meet or exceed military specifications for drop safety. Pre-assembled, CNC machined trigger housing contains H13 heat-treated trigger, hammer, sear and a stainless steel spring for trouble-free installation. Bullet Proof designed and extensively tested by shooters for shooters, the new Enhanced Trigger Unit has raised the bar for drop-in AR triggers.

Wilson Combat AR-15 Enhanced Trigger units will reliably function in any standard USGI style AR style lower receiver with standard GI trigger pins of .154” diameter regardless of caliber, including 7.62/.308 length AR receivers.  

  • Colt brand rifles made for commercial use between 1991 and 2009 will generally have a proprietary trigger pin size of .169” and are not compatible with any Wilson ETU.  
  • Colt rifles produced with pinned-in sear blocks are not compatible with any Wilson ETU.
  • Wilson Combat ETU is not compatible with the Bushmaster ACR.
  • The MR556 and any other AR style rifle with a firing pin safety mechanism in the bolt carrier is only compatible with the ETU Two Stage Models (TR-ETU-M2).
  • With .22 LR AR conversions or complete .22LR caliber  AR-pattern rifles it is recommended that the standard single stage ETU (TR-ETU) or two stage ETU (TR-ETU-M2) trigger be used along with high or hyper-velocity ammunition for best reliability.
  • The ETU is compatible with the S&W MP-10 .308 AR but the rifle's ambidextrous bolt catch must first be removed to install the trigger unit.

Because of the short, fast reset of the ETU, always use a firm grip and solid hold when shooting from the bench or prone to ensure that bump firing does not occur.

 TTU Two Stage Match - Installation Instructions


Article on Wilson Combat TTU

Courtesy of InterMedia Outdoors

Tactical Trigger Unit Comparison Chart

 Product ReviewsClick here to review this item
Awesome Trigger
The Wilson Combat ETU-M2 is the most well balanced trigger I have encountered. The first stage take up is very smooth and short (a little shorter than the Geissele SDE as a reference). Then you hit a defined wall in the 2nd stage. There is almost not creep before the carrot snap break. Overtravel is short as well. The reset has a strong, tactile click with little forward movement (shorter than the SDE for reference). Total pull weight between both stages is 4.25 lbs which is perfect for me. It’s a great all purpose trigger. The stages are defined enough to be useful for precision shots but short enough to pull fast for quick spilts. I dig this trigger and will continue to sing its praises.