Zero what??? - NcStar 4x32mm Compact Rifle Scopes with 3 Rail Sighting System

I bought the NcStar 3rail scope/red dot/green lazer package. My problem is the scope. It looks radical, The sight picture through the P4 sniper reticule is GREAT, BUT It will not ZERO in. Everytime I fire my rifle the internal optics jar out of alignment so that my groups at 100yrds is like 5 feet. The scope reacted this way on my DPMS LR308 and also on my friend's Colt M4 .223. A piece of advise, this scope is more useful as a sinker on your fishing rod.
Pros: Compact, Easy fit to rifle, Good Sight Picture
Cons: Won't Zero In, Eye Relief is Too Close

This review was written in the old system and had content requirements that are different than reviews written today.