SureFire Radio Communication System Conversion Kit Universal Acoustic Coupler/Slide Assembly Package Set of 2. Let's be clear: Not having access to clear radio communication in noisy and potentially high-stress work environments can be disastrous. You need high-quality earplugs and a way to connect them to your coms. The Universal Acoustic Coupler (UAC) is a high-strength polymer filter that allows for two-way radio communication while using SureFire earpieces. The UAC is designed to be fitted to either left or right SureFire earpieces without compromising the direction of the filter or the radio acoustic tubing. The UAC has a two-position cap that provides maximum hearing protection when closed and situational awareness when open. Specifications for SureFire Radio Communication System Conversion Kit: Manufacturer: SureFire Size: One Size Color: Grey Quantity: 2 Features of SureFire Radio Communication System Conversion Kit Made from high strength polymer that is durable discreet and ultra-compact Two-position cap provides maximum hearing protection or maximum situational awareness with SureFire earpieces 90-degree ergonomic design couples around-the-ear tubing with SureFire earpiece noise filters One UAC size fits small medium and large SureFire earpieces Package Contents: SureFire Radio Communication System Conversion Kit SureFire Z-90263: Radio Communication System Conversion Kit Universal Acoustic Coupler/Slide Assembly Package Set of