Irregular Defense has expanded on their line of Modular Pressure Switch Covers with the new MPSC 45 SF (SUREFIRE)

Irregular Defense states “Introducing the MPSC 45 SF. It’s a new addition to our MPSC 45 series of Modular Pressure Switch Covers.

It was designed for use with the Surefire ST07 tape switch; offering a secure, high and tight placement of your light tape switch.

The design allows quick and easy access to your switch, while keeping it sare from ND (Negligent Discharge).”


  • Modular Pressure Switch Cover 45°
  • Height: 0.64”
  • Width: 1.21”
  • Length: 3.125”
  • MLOK Spacing: 2 slots (occupies 2 Mlok rail flat areas)
  • Weight: 12 G with hardware
  • Set of 1x Modular Pressure Switch
  • Proprietary 2 piece design with 45° angle allows for the mounting of Surefire ST07 pressure switches safely and securely
  • Completely modular, reversible and ambidextrous
  • Configured for Surefire ST07 pressure switch
  • Heat protection and enhanced grip
  • Made in USA, designed and licensed for MLOK
  • Made from high strength nylon polymer
  • Includes low profile recessed mounting hardware
  • Heat resistant to 300°
  • Available in black and FDE Cerakote

To learn more about Irregular Defense. CLICK HERE