The case is aluminum, hard-anodized
matt black to prevent from scratching and
corrosion. Factory-assembled and sealed,
the sight is virtually water- and dust-tight.
The main light source in normal conditions
is a fiber optics circuit, encompassing
the front and screen from three sides.
If there's not enough external light, the
internal tritium-lit element takes over.
The change is automatic, no action is
needed from the user, and the takeover is
practically seamless. As a matter of fact
there's no 'take-over' as such: the tritium
element lights the reticule all the time, but
the sunlight channeled by the fiber optics
is too bright for the feeble tritium light to
be noticed.
Mepro 21 is offered with a choice of five sighting reticules:
bullseye (a circle-dot), triangle, cross and dots – either 4.3
or 5.5 MOA.
The reticule is zeroed with flat-headed screws protected
by the casing wells from accidental activation. One click
moves reticule 1.7 MOA, with range of adjustment of ca.
145 MOA horizontal, and ca. 80 MOA vertically. The sight
is NVG compatible.
Mepro 21M is delivered with MIL-STD-1913 (Picatinny) rail
grabber mount as a default.
