EOTech 553 - Manual (Page 19)

2.0 OPERATING INSTRUCTIONS
This section describes the features and operating instructions of the M551, M552, and
SU-231/PEQ (M553). Please read the instructions carefully before mounting and using the
sight, and always practice proper firearm safety.
The Reflex Sight will include:
• Sight assembly
• 2 x Type N alkaline (M551), AA alkaline batteries (M552), or 123 Lithium batteries (M553)
• 7/64” Hex wrench (M551 and M552 only)
• Knurled Picatinny Bolt (M551 and M552 only)
• Technical Manual
2.1 Description of Components, Controls, and Indicators
The Reflex Sight uses a laser to illuminate a holographic reticle pattern embedded in the heads-
up display window and forms a virtual image of a reticle pattern. The shooter looks through the
heads-up display window and sees a bright red image of a reticle pattern projected onto the
target plane. There is absolutely no light projected onto the target plane. The Reflex Sight has
no magnification.
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