CMC AR-15 Lower Parts Kit w/ Curved 3–3.5 lb Trigger

This CMC Triggers lower receiver parts kit is designed for AR-15 builders and armorers who need a comprehensive set of replacement or build components. The kit includes a curved single-stage trigger specified at 3–3.5 lb pull and is the small-pin (.156″) configuration intended to fit most AR-15 lower receivers. The kit supplies standard mil-spec parts for assembly or repair and does not include a pistol grip.

Key Specifications

• The trigger pull is specified at 3–3.5 lb and is non-adjustable.
• The trigger style is a curved single-stage design for a consistent break.
• The pin configuration is a small pin (.156″) model for AR-15 lowers.
• The kit material is listed as steel and aluminum.
• The product is sold as a kit containing multiple receiver parts.
• The kit includes a trigger guard and associated roll pin.
• The kit contains essential lower parts including bolt catch, mag release, safety, buffer retainer, takedown pins, and springs.
• The finish/style is listed as small pin AR-15.
• Listed overall dimensions are 1.15 x 5.30 x 8.75 inches.
• The kit is designed to fit most AR-15 rifles (grip not included).

This parts kit gives builders and technicians a reliable foundation for assembling or refurbishing an AR-15 lower. With mil-spec components and a CMC curved single-stage trigger, it streamlines installation and replacement work while keeping parts compatibility front of mind. Whether completing a custom build or maintaining a service rifle, this kit provides the core items you’ll need for a dependable lower receiver setup.