Stern Defense H2S Drop-In 2-Stage Trigger Green NiB AR-15/AR-10

The Stern Defense H2S is a drop-in hybrid 2-stage trigger designed as a refined middle-ground between competition and combat applications for the AR-15 and AR-10 platforms. Short for Hybrid 2-Stage, the H2S delivers a smooth first-stage pull with a clean, positive second-stage break and a short reset.

The trigger installs as a self-contained cassette in any lower receiver equipped with a standard mil-spec hammer pin, requiring no fitting or stoning out of the box. The housing is precision-machined from 6061 billet aluminum and anodized in green, while the trigger, hammer, and disconnect are cut from A2 tool steel bar stock and finished with a Nickel Boron (NiB) coating for a slick, corrosion-resistant surface.

This configuration pairs the Nickel Boron internal finish with the green anodized housing and is compatible with AR-15 and AR-10 pattern lower receivers, including 9mm PCC builds and standard rifle and pistol platforms. A drop-in upgrade that brings a distinctly aftermarket feel to mil-spec lowers without permanent modification.