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

Upgrade your PTR MP5 clone with the 3-Position SEF Selector for the FRT-RD3™. Designed specifically for Rare Breed Triggers’ forced reset trigger system, this selector ensures seamless compatibility with HK-style platforms. Built for durability, the selector barrel is 4140 steel heat-treated to 45 HRC, while the lever is anodized 7075 aluminum for corrosion resistance.

Key features:

• Direct drop-in fit for PTR MP5 clones using FRT-RD3 triggers
• Precision-machined SEF markings (Safe, Einzelfeuer, Feuerstoß)
• Includes 1/16″ and 3/32″ Allen keys for installation
• Made in USA with mil-spec materials

Rare Breed Triggers delivers proven performance for HK clone platforms. Complete your MP5 FRT build with this factory-direct upgrade.