The RISE Armament RA-100 Flat Two-Stage Trigger is a duty-grade, precision-machined trigger built for reliability, durability, and smooth, consistent performance without a premium price tag. Engineered from S7 tool steel with a black nitride finish, the RA-100 Flat delivers a crisp two-stage pull (1.5 lb first stage into a 3.0 lb second stage for a predictable 4.5 lb total), a strong tactile reset, and a rugged hammer spring that reliably ignites primers even with steel-cased ammunition. Designed for easy installation with fewer parts and mil-spec pins included, the RA-100 Flat is intended for law enforcement, military, and serious shooters seeking mil-spec-beating performance in AR-15 and AR-10 platforms. Product Specifications Manufacturer: RISE Armament Model: RA-100 (Flat Two-Stage Trigger) Color/Finish: Black (black nitride finish) Trigger Shape: Flat blade (note: input also referenced "Curved" flat blade version described) Material: S7 tool steel (precision machined, heat treated) Trigger Pull: Two-stage 1.5 lb first stage into a clean 3.0 lb second stage ( 4.5 lb total) Reset: Strong, fast, tactile (audible and felt) Compatibility: AR-15 and AR-10 platforms (standard small-pin mil-spec dimensions) Package Contents: RA-100 Two-Stage Trigger, mil-spec trigger and hammer pins Use Case: Designed for duty, law enforcement, military, and civilian shooters Highlights: Precision S7 steel construction, black nitride corrosion resistance, simplified installation with fewer parts, forceful hammer spring for reliable primer strikes Warning: California Proposition 65