Expo Arms AR-15 Disconnector

The interface between hammer and trigger — and a critical spare for any AR-15 armorer's kit. The Expo Arms AR-15 Disconnector is a mil-spec replacement disconnector machined from hardened steel for standard AR-15 semi-automatic fire control groups, providing the reliable trigger-hammer interaction that consistent semi-automatic function requires.

The Expo Arms AR-15 Disconnector is a mil-spec replacement fire control component machined from hardened steel, designed for standard AR-15 semi-automatic fire control groups and compatible with a wide range of AR-15 pattern rifles and lower receivers.

Three features define this disconnector's value as a repair and spare parts component. The disconnector serves as the interface between hammer and trigger, catching and holding the hammer after each firing cycle and releasing it at the correct point for the next trigger pull — a worn or damaged disconnector causes hammer follow, double-fire conditions, or trigger-reset failures that render the rifle unreliable. Mil-spec dimensions ensure direct drop-in compatibility with all standard AR-15 fire control groups without fitting or modification. Hardened steel construction provides the wear resistance required at a component that contacts the hammer under significant force with every firing cycle, maintaining consistent geometry across high round counts.

Compatible with standard mil-spec AR-15 semi-automatic fire control groups. Sold individually.

Hardened steel. Mil-spec dimensions. Semi-auto AR-15 fire control.

Ideal for AR-15 repairs, new lower builds, and armorer spare parts kits where a quality mil-spec disconnector is needed.

By Expo Arms. Sold individually. Standard Expo Arms warranty applies.