LaRue MBT-2S 2-Stage Trigger, Curved, for AR-15/AR-10

About this product

The LaRue Tactical MBT-2S is a two-stage drop-in fire-control group for AR-15 and AR-10 pattern rifles. The first stage takes up about 2.5 pounds of travel, then a crisp 2-pound wall breaks the shot for roughly 4.5 pounds total pull weight, with a short, positive reset. It's a full trigger, hammer, and disconnector swap that drops into any mil-spec lower using the standard pins, so there's no fitting involved and no gunsmith visit required to get it running correctly. It's one of the more established two-stage triggers on the market, and it shows in the fit and finish of every part in the kit, from the machined edges on the trigger bow to how smoothly the hammer springs seat.

What is it used for?

It's an upgrade for shooters who want a lighter, more predictable break than a stock mil-spec AR trigger, without going to a single-stage race trigger that some duty and defensive shooters find too light for their use case. The two-stage feel — a defined take-up, then a clean break — is popular on precision builds and duty rifles alike, because the heavier first stage keeps the trigger safe-feeling under stress while the clean break still helps accuracy at distance. It shows up often on rifles that see both range time and serious use.

What's included in the kit?

You get the curved trigger bow (the flat-bow version is sold separately), the hammer, the disconnector, and springs. A second, lighter hammer spring is included too, which drops the pull to about 3.5 pounds for shooters who want a lighter setup for competition use rather than duty carry. Swapping between the two spring weights is a simple parts change you can do yourself with basic tools, without sending the trigger group back to LaRue or a gunsmith.

What fits it?

It's compatible with .223/5.56, .308, and other AR-platform builds that use a standard mil-spec trigger pocket. The trigger and hammer are machined from S7 tool steel and the disconnector from A2 steel, then nitride finished, and it uses standard mil-spec pins and pin holes throughout, so fitment issues are rare on a properly spec'd lower, and the same trigger group works across calibers as long as the pocket dimensions are mil-spec.

How does it compare to a single-stage trigger?

A single-stage trigger breaks with no take-up at all, which some shooters like for a crisp, immediate feel, but it also means less warning before the shot fires. The MBT-2S's two-stage design gives you a tactile heads-up through the first stage before the wall, which a lot of duty and precision shooters prefer because it reduces the chance of an unintentional discharge under stress while still breaking cleanly once you're through the take-up, a balance a lot of duty and precision shooters land on after trying both styles side by side on the same rifle.

Does it work in California?

Yes. A drop-in AR trigger group is a parts-level upgrade, not a feature that affects magazine capacity or the fixed-magazine and featureless configuration rules that apply to California AR-platform rifles. It's legal to buy and install here without any special paperwork. See our California gun laws page for the rules that do apply to your specific rifle build and configuration, since features like grip style and magazine type are governed separately from trigger components.