The Magpul ESK is compatible with SEF/SAFE-SEMI trigger packs and is NOT compatible with Ambi/Navy/FBI or CETME trigger packs.
If your firearm is equipped with an Ambi/Navy/FBI trigger pack it must be exchanged for a SEF/SAFE-SEMI trigger pack in order to function with the Magpul ESK.
- modular, ambidextrous selector with enhanced ergonomics
- provides a modern rendition of the classic MP5 SSL with updated aesthetics
- allows quick firing hand activation and deactivation of the safety and provides for ambidextrous use
- made from high-strength polymer and corrosion-resistant steel
