Surplus NAVSEA SU-231A Eotech EXPS3

Surplus NAVSEA marked SU-231A. These are the real deal.

The EOTech SU-231A/PEQ is a military-specific designation for the holographic weapon sight (HWS) based on the civilian EXPS3-0 model, issued by the U.S. military for use on platforms like the M4 carbine and SCAR rifles. It's an upgrade from the earlier SU-231/PEQ (based on the EOTech 553), designed for faster target acquisition in close-quarters combat. The "NAVSEA marked" variant refers to optics featuring the Naval Sea Systems Command (NAVSEA) logo etched on the hood, indicating they passed rigorous military testing standards under Naval Special Warfare (NSW) contracts.

This optic is great for MK18 and various other clone builds.