Product Overview and Introduction

Experience innovative match-grade performance and effortless installation with the Stern Defense Hybrid 2-Stage Drop-In Trigger (H2S) – MPN: H2S. Engineered for AR-15 and AR-10 platform rifles, this self-contained cassette trigger combines the smooth, predictable control of a two-stage match trigger with the rock-solid reliability of an enclosed drop-in module.

Whether you are building a dedicated precision carbine, a competition rifle, or upgrading a duty-capable platform, the H2S delivers a clean break and a positive reset that dramatically enhances your shooting accuracy and speed.

Innovative Hybrid Design and Cassette Convenience

Engineered to eliminate the hassle of traditional trigger installations while providing superior tactile feedback, the H2S features advanced internal geometry:

• Hybrid Two-Stage Action: Provides a smooth, predictable first-stage take-up followed by a crisp, glass-rod second-stage break for precise shot placement.

• Self-Contained Cassette Housing: Housed in a robust, pre-assembled aluminum casing that drops straight into your lower receiver without requiring complex spring alignment or gunsmithing.

• Distinct Green/Black Aesthetics: Features a striking dual-tone green and black color profile that adds a custom look to your firearm build.

• Short, Positive Reset: Engineered with a distinct and tactile reset to facilitate rapid, controlled follow-up shots under pressure.

Premium Construction and Reliable Ignition

Stern Defense constructs their drop-in triggers from high-grade tool steel components that are precision-cut and heat-treated for maximum wear resistance. Paired with a powerful, dependable hammer spring, the H2S ensures 100% positive primer ignition across all commercial and military ammunition types without the risk of light strikes.

Key Features and Benefits

• Drop-In Convenience: Complete self-contained unit installs into standard lower receivers in minutes.

• Two-Stage Control: Smooth take-up and crisp break improve accuracy over standard mil-spec triggers.

• Durable Build: High-grade tool steel internals housed in a sturdy aluminum cassette frame.

• Universal Small-Pin Fit: Compatible with standard AR-15 and AR-10 lower receivers utilizing .154-inch trigger and hammer pins.

Specifications

• Product Type: AR-15 / AR-10 Two-Stage Drop-In Trigger Assembly

• Manufacturer Part Number (MPN): H2S

• Platform Compatibility: AR-15 / AR-10 Mil-Spec Lower Receivers (Small Pin .154-inch)

• Trigger Type: Hybrid Two-Stage Drop-In Cassette

• Color / Finish: Green / Black Housing

• Manufacturer: Stern Defense