Good scope. Glass is of sufficient quality, but don't expect any amazing coatings on it, like on a $1000+ Leupold/Nighforce/Meopta/S&B/Etc. optics. That said, I'd rate it on par to the entry-level ~$200 Leupolds/Nikons/Bushnells/Vortex/Etc.
Up-sides:
Durability is outstanding. Housing is thick cast aluminum, mount is even thicker cast aluminium. Holds zero indefinitely, side-clamp offers a within-1MOA return-to-zero.
Battery type is the common watch D-357 type battery that you will find at any Wallgreen's.
Field of view at 100yards is fairly wide. I'd guess 30-40 feet wide.
Siminov ranging reticle is good for getting a close field range estimate. Ballistic drop compensator in the reticle is spot on for the 122gr round. Zero at 100 yards/meters on the top chevron, and the other two give you ballistic solutions for 200 and 300 meter shots.
Clicks on the turrets are very crisp and rock-solid. You feel confident it has moved 1 click and won't move any more. 1 click = 1/2 MOA shift. I kind of like it better than 1 = 1/4 MOA, to be honest.
I think the Leupold I have has mushier clicks than the PSOP.
Down-sides:
WEIGHT! The scope weighs in at 1.5lbs or so. Think of it like adding another loaded mag to your AK...the feeling is fairly close.
Unforgiving eye relief. You have to be right within it's 70mm +/-5mm of the eye relief to see the reticle. I've noted even a cheap chineese Osprey/NCStar scope has better eye relief characteristics at 4x than the PSOP.
Might be possible to bump the turrets when moving aggressively with the rifle.
Neutral:
Chin weld. Learn to love it.
Scope snaps to your eye when you shoulder the gun. Just stand normally, bring the rifle to shoulder and *BAM* you're looking right through the scope.
Does not obscure your iron sights. Drop your eye level down an inch, and you're looking through the irons. How about that for a pair of BUIS?!
Overall:
I'd give it a 7/10.
Pro:
Durable
Reliable
Good Reticle
Easy-to-find batteries
Price. A similar set-up from a US-Optics manufacturer would probably run $300-$400
Con:
Heavy
Unforgiving eye relief