LaRue MBT-2S 2-Stage Trigger

Description

LaRue MBT-2S 2-Stage Trigger

The LaRue MBT-2S trigger turns a mil-spec AR-15 or AR-10 lower into a genuinely precise rifle, since it replaces the mushy factory fire control group with a crisp, repeatable two-stage break built in-house by LaRue’s own toolmakers in Leander, Texas.

Every MBT-2S is CNC-machined from solid S7 tool steel rather than cast or MIM components, which is what gives it the glass-smooth, hyper-consistent feel LaRue is known for. Out of the box, the trigger breaks at 4.5 lbs — a 2.5 lb first stage followed by a clean 2.0 lb second stage — and because LaRue includes an additional heavy spring in the box, shooters can bump total pull weight up to 6 lbs for duty or field use without buying a separate part. That flexibility, paired with a positive reset, makes the MBT-2S equally at home on a competition rifle and a working carbine.

TX Arms carries the MBT-2S in both trigger bow profiles, so shooters can choose the feel that matches how they actually run the gun. The Curved Bow keeps the traditional AR trigger shape most shooters already know, while the Straight Bow offers a flat, vertical face that promotes consistent finger placement and a more predictable press for precision work. Either version only fits small-pin lower receivers with mil-spec .154-inch trigger pins, so confirm pin size before ordering.

Key Features — LaRue MBT-2S Trigger

• CNC-machined from S7 tool steel for a hyper-consistent, glass-smooth break
• Two-stage pull breaks at 4.5 lbs (2.5 lb first stage / 2.0 lb second stage)
• Includes a heavy trigger spring for an alternate 6 lb pull, giving shooters two pull-weight options from one part
• Smooth take-up with a short, positive reset
• Available in Curved Bow (LT-MBT-2S) or Straight Bow (LT-MBT-2S-SB) profiles
• Complete drop-in kit: trigger, hammer, light and heavy springs, trigger and hammer pins included
• Fits mil-spec AR-15/AR-10 lowers with small-pin (.154″) trigger pins
• Made in-house in Leander, Texas

 

Why This Product Stands Out

Most shooters who upgrade a trigger are chasing one thing: a break they can trust without thinking about it, and that’s exactly where the MBT-2S earns its reputation. Because LaRue machines the trigger, hammer, and both springs from S7 tool steel in-house, the parts arrive matched and ready to drop in — there’s no fitting, no stoning, no chasing creep out of a cast part. Shooters who have run higher-priced two-stage triggers alongside the MBT-2S consistently describe the break as comparably crisp, which says more about LaRue’s manufacturing than any spec sheet could.

The dual-spring setup is what separates this trigger from a one-weight competitor. A DMR or precision rig can run the factory 4.5 lb pull for a lighter, more deliberate press, while a duty or training carbine can swap to the included 6 lb spring in minutes for a heavier margin against unintended discharges. That kind of adjustability, built into a single purchase, is rare at this price point.

Bow style is a preference, not a performance compromise — both the Curved and Straight Bow versions share the same S7 steel construction, the same 4.5/6 lb pull options, and the same reset. Shooters who grew up on a standard AR trigger will feel at home with the Curved Bow, whereas those chasing consistent finger placement on a precision build often prefer the flat face of the Straight Bow.

Ideal Use Cases

• Competition and precision rifle builds
• Duty and patrol carbines that need a heavier pull option on hand
• DMR and long-range AR-10 platforms
• General mil-spec AR-15/AR-10 trigger upgrades

 

Technical Specifications

 

Trigger Bow Options (Product Variations)

 

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Manufacturer: LaRue Tactical | Model: MBT-2S | Type: Two-Stage AR-15/AR-10 Trigger

Curved Bow: SKU LT-MBT-2S | UPC 810143180985 Straight Bow: SKU LT-MBT-2S-SB | UPC 810143180992