EOTech XPS2-1 Holographic Weapon Sight, Single CR123 battery; reticle pattern with 1 MOA dot - Dana Safety Supply
EOTech 512/552 Battery Compartment Repair Kit (Pre-2009) Battery Compartment Repair Kit allows for repair of the battery cap if the spring and/or rubber grommet fail on pre-2009 512/552 sights. Designed to extend
Eotech XPS2-0 replacement battery
EOTECH 512 Holographic Gun Sight | Bass Pro Shops
EOTech EXPS3 holographic sight | GUNSweek.com
EOTECH HWS Battery Contacts and Replacement Process - YouTube
Eotech L3 Communication 512Sight W/Laserbattcap RED