The Schmid Inside SI-FCG-2S2 2-Stage Curved Nickel Boron FCG is an upgraded AR-15 fire control group for shooters who want a smoother two-stage trigger while keeping a traditional curved trigger shoe. With a listed 4.5 lb pull weight and a durable Nickel Boron finish, this trigger is a practical upgrade for general-purpose AR-15 builds, range rifles, hunting rifles, and precision-oriented carbines.
This is the curved trigger Nickel Boron version of Schmid’s two-stage fire control group. The curved shoe gives a familiar AR-15 trigger feel, while the two-stage design gives the shooter a defined take-up stage, a clean wall, and a controlled final break.
Nickel Boron Finish: The Nickel Boron finish is used for wear resistance, smoother operation, and easier cleaning compared with a basic phosphate-style fire control group. It also gives the trigger, hammer, and related components a bright nickel appearance.
Two-Stage Trigger Control: A two-stage trigger gives the shooter an initial take-up stage followed by a defined wall and final break. This style is popular for shooters who want more control than a standard single-stage mil-spec trigger while keeping a familiar AR-15 operating system.
4.5 lb Pull Weight: Schmid lists this two-stage curved Nickel Boron fire control group with a 4.5 lb pull weight. Pull weight can vary slightly depending on the lower receiver, installation, lubrication, measurement point, and break-in.
Included Fire Control Components: This fire control group includes the trigger, hammer, disconnector, hammer spring, trigger spring, disconnector spring, hammer pin, and trigger pin. It is intended for compatible AR-15 lower receivers.
Standard vs. Elite Trigger Note: This SI-FCG-2S2 model is the 4.5 lb curved Nickel Boron version. If you want a lighter Elite configuration, compare it with Schmid’s Elite 3.5 lb trigger options.
Important Fitment Note: Confirm compatibility with your AR-15 lower receiver, safety selector, trigger pin holes, lower parts kit, and all applicable laws before installation. Function check the firearm after installation and before live fire.
Related Gear: Browse more Schmid Inside products, shop the AR-15 Store, or pair your build with compatible 5.56 NATO / .223 Ammo.