The Colt AR15A4 Ejector/Safety Detent Spring is a factory replacement small part engineered to keep your AR-15’s ejector and safety detent system running smoothly. Built to Colt specifications for AR-15, M16, and AR-15/M4 platforms, this compact coil spring helps maintain positive safety engagement and consistent ejection performance over extended use.

Ideal for routine maintenance, repairs, or careful parts upgrades, this spring is suited to rifles used for training, competition, and regular range sessions where reliability matters. Using an original Colt component helps preserve the feel and function of your rifle while simplifying installation and future service. It’s a straightforward way to refresh a hard‑working AR-15 and benefit from Colt’s long-standing reputation for dependable firearm parts and thoughtful engineering.

• Manufacturer: Colt
• Model: AR15A4 Ejector/Safety Detent Spring
• Compatible Models: AR-15, M16, AR-15/M4 platforms
• Part Type: Ejector/Safety Detent Spring
• Installation: Drop-in replacement for worn or damaged springs
• Use Case: Supports reliable safety engagement and ejection function