The M900A's intense beam is configured for close- to mid-range applications and attaches to Picatinny rail-equipped weapons via an integral M93 throw-lever mount which holds securely, even to out-of-spec rails. Each unit features four types of switches: (1) momentary-on pressure pads to activate the main light (one on each side for ambidextrous operation) (2) a rotary constant-on switch for the main light (3) a system disable switch to shut down the entire unit, and (4) a momentary-on thumb switch to control two low-output LEDs (which come in red, white, and blue) ideal for low-signature navigation. The optional KT4 conversion kit replaces the M900A's 1.62" diameter head with a 2.5" diameter head that produces a narrow, farther-reaching beam.
