Expo Arms AR-15 Trigger Spring

Keep your trigger resetting cleanly — a must-have for any AR armorer's spare parts kit. The Expo Arms AR-15/AR-10 Trigger Spring is a mil-spec drop-in replacement for damaged or worn trigger springs, providing the consistent return force that ensures reliable trigger reset across both AR-15 and AR-10 fire control groups.

The Expo Arms AR-15/AR-10 Trigger Spring is a mil-spec replacement trigger spring compatible with standard AR-15 and AR-10 fire control groups, providing consistent trigger return force for reliable trigger reset and fire control function.

Three features define this spring's value as a repair and build component. The trigger spring provides the return force that resets the trigger forward after each shot — a worn or broken trigger spring causes trigger follow, failure to reset, or sluggish reset that degrades fire control reliability. Compatibility with both AR-15 and AR-10 fire control groups makes this a single spare part that covers two platforms for armorers and builders who maintain rifles in both caliber families. Durable spring steel construction provides the consistent spring rate across high round counts that a fire control component requires to maintain repeatable trigger feel throughout its service life.

Compatible with standard mil-spec AR-15 and AR-10 fire control groups. Sold individually.

Durable spring steel. Mil-spec dimensions. AR-15 and AR-10 fire control group compatibility.

Ideal for new builds, trigger repair, and armorer spare parts kits across AR-15 and AR-10 platforms.

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