3-Position SEF Selector for the FRT-RD3 (SEF) – For use with the PTR MP5 Clone

This 3-position SEF selector is designed for PTR MP5 clones and integrates seamlessly with the FRT-RD3 trigger system. It provides safe, semi, and full-auto positions, offering a direct upgrade or replacement for factory parts. Installation involves basic fitting to ensure proper function with the trigger group. Made from durable materials, it maintains the MP5's classic controls while delivering reliable operation. This part ships directly to the buyer without FFL requirements, making it a convenient solution for those needing to replace a worn or malfunctioning selector switch. It is a semi-automatic component, firing one round per pull of the trigger, and is compatible with Rare Breed Triggers' FRT-RD3 system. Perfect for those maintaining or upgrading their roller-delayed HK pattern firearms.