EXPSExpanding Squares
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The EXPS and XPS units are powered by a single CR123A lithium battery.
Rubberized push-button controls are located on the left side of the EXPS model and on the rear of XPS models.
To change the reticle's intensity, simply press the up or down arrows or press the night vision (NV) button on the EXPS model for use with night vision devices.
The EXPS features an integrated throw-lever mount (including riser) and positions the reticle at the lower-third co-witness height for a more heads-up shooting style.
The XPS reticle is positioned at the absolute co-witness height and lacks the riser and night vision settings of the EXPS.