Switch Rail MPLS is similar to Switch Rail in that they’re both low profile task lights, offering a variety of specialty task color combinations. Where they differ: the MPLS model makes use of Princeton Tec’s versatile mounting system for attachment to MOLLE and reverse Picatinny in addition to Picatinny Rail. Designed for navigation, signature reduction, stealth structure search and breaching operations, this light has recessed LEDs that provide discreet lighting. A single button allows access to up to two constant lighting modes.