You're never out of luck or power with a self-illuminating Meprolight® M21 Day/Night Reflex Sight for fast, bright shots!
Instant all-light target acquisition, NO batteries needed! Designed through close collaboration with Israeli Special Forces, the M21 uses a fiber-optic light-gathering system during the day and self-powered tritium at night to ensure a bright aiming point around the clock. No fumbling with batteries or switches.
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