Long range shooters looking for a 1” tube riflescope need look no further than the Optika5 4-20x50 / 4-20x50 RD. Available in non-illuminated and illuminated (RD) models, the 4-20x50 features MeoBright lens coatings for maximum light transmission and MeoDrop hydrophobic coating for water repellency. ¼ MOA per click adjustments are standard, with non-illuminated second focal plane reticle choices of Z-Plex or Z-Plus, and illuminated (RD) reticle options of Z-Plus RD or BDC-3 RD.
 
Magnification
4 - 20 x
Objective lens
50 mm
Main Tube Size
25.4 mm
Eye relief (mm / in)
3.62 in
Field of view (m/100m // ft/100yds)
27.8 - 5.8 ft/100yd
Field of View at
5.3 - 1.1 °
Focal Plane Position
2
Dioptric compensation
-2 / 2 D
Daylight Transmission
91 %
Impact per click (cm/100m // in/100yds)
0.26 in/100yd // 0.25 MOA
Windage and elevation adjustment range (cm/100m // in/100yds)
63-63 in/100yd // 60-60 MOA
Paralax Correction
10 yd - infinity y/n
Length (mm / in)
13.6 in
Weight (g / oz)
23.3 oz
A (mm / in)
345/13.58
B (mm / in)
113/4.45
C (mm / in)
35/1.38
D (mm / in)
35/1.38
E (mm / in)
57.5/2.26
F (mm / in)
43.5/1.71
G (mm / in)
25.4/1
H (mm / in)
127/5
K (mm / in)
103/4.06