This is one of my very favorite optics that I've been looking to pick up for a long time. This is an NPZ manufactured optic and is supposedly issued to SVD sniper teams to expand the observational range of the standard PSO-1 optic.
Optical quality is very high and it has an adjustable diopter to compensate for the very high zoom level.
The one I received has a C-clamp for mounting to a fixed object but I believe it can also take it's own small tripod mount, though I haven't seen it anywhere yet.
Like most variable power optics produced by NPZ or BelOMO the symbology magnifies as the variable power is increased, so at highest power much of the symbology is cut off. In my experience you tend not to notice this and it hasn't appeared to interfere with the device functionality.
MP 4-20 also has the classic extendable sun shade but does not have illumination of the reticule, and comes with the amber filter for reducing eye strain (like the famous Blue-Blocker sunglasses)
MP 4-20 is not illuminated and does not have batteries or tritium. I regularly take this optic to the field for work and it's proven itself to be a handy companion.
The Chamelion SVD rig has a spotter scope pouch that appears to be designed for this optic in particular. It's often said that this pouch is for a signal flare but it really doesn't make sense to me. Why would you carry just one flare in a pouch that is so well protected instead of just using two or four vertical mounts? So many other Russian chest rigs do for flares and they are a common design feature on other rigs.
No, to me it is clear that the perfect fit of the MP4-20 is not an accident, and neither is the double flap method used to protect it
Even some modern Chamelion rigs have the pouch as well
This is the naked eye view near Barstow, Texas.
Through the MP at 4x
With the amber filter installed at 4x. I have to say that this feature works very well and does actually reduce eye strain
1.7m range finder goes out to 2700 meters
The 4x dial rotates up to 20x and the diopter ranges from +5 to -5
Auzie and his MP 4-20
yM8/uM8 spotter scope, also by NPZ
A much smaller cousin of the MP spotter scope and also manufactured by NPZ is the tiny yM8 or yM8-2 optic. y is prounced oo like moo, or oo-em-eight.
This is small enough to fit in the palm of your hand, is 8x fixed magnification and has an adjustable diopter as well (actually the longest diopter I have seen, it keeps rotating and rotating but finally stops after about a zillion turns).
There is no reticule on this spotter and no range finder, it's basically a simple monocular without batteries or tritium illumination. Optical clarity is also very good.
Next to the Surefire G2 light
MP4-20 and yM8