The Wilson Combat Tactical Trigger Unit M2, Two-Stage, 4-4.5lb, Curved, Black (brand part no. TR-TTU-M2) is a pre-assembled, CNC-machined drop-in trigger that delivers a 4 to 4.5-pound pull straight out of the box, with no alteration or tweaking needed. A reduced reset speeds up follow-up shots, and unique hammer geometry ensures reliable ignition across military and surplus ammunition. The TTU M2 meets or exceeds drop-safety standards thanks to a 1911-style half-cock notch, and it’s built with an H13 heat-treated trigger, hammer, and sear along with a stainless steel spring, all finished with a dry film lube coating and no adjustment screws to work loose. Because of its short, fast reset, always use a firm grip and solid hold when shooting from the bench or prone to avoid unintentional bump firing. For AR-15 shooters who want a reliable two-stage trigger built for hard use, this AR trigger is a proven drop-in unit.

Key Specifications

• Breaks between 4 and 4.5 pounds, factory-set with no alteration needed.
• Two-stage design with no adjustment screws.
• Features a reduced, positive reset for rapid follow-up shots.
• Unique hammer geometry ensures reliable ignition with military and surplus ammunition.
• Meets or exceeds drop-safety standards via a 1911-style half-cock notch.
• Trigger, hammer, and sear are H13 heat-treated steel.
• Uses a stainless steel spring.
• Ships as a pre-assembled, CNC-machined housing.
• Finished with a dry film lube coating.
• Uses a curved trigger shoe.

Frequently Asked Questions

Will this fit any Colt AR-15? No, Colt commercial rifles built between 1991 and 2009 use a proprietary 0.169-inch trigger pin and are not compatible with any Wilson TTU, nor are Colt rifles with pinned-in sear blocks.

Is it compatible with the Bushmaster ACR or MR556? It is not compatible with the Bushmaster ACR. Rifles like the MR556, which use a firing-pin safety in the bolt carrier, are only compatible with the TTU 3G or this Two Stage (M2) model.

Is there a bump-fire risk with this trigger? Its short, fast reset means shooters should always use a firm grip and solid hold from the bench or prone to prevent unintentional bump firing.

Buy the Wilson Combat Tactical Trigger Unit M2, Two-Stage, 4-4.5lb

A factory-set two-stage pull with a positive reset and mil-surplus-reliable ignition makes the TTU M2 a proven choice for hard-use AR-15s. Order it from our Lubbock, Texas gun shop for fast, insured shipping.