I bought this sight for my ics MK5 A5 and boy does it work great! This thing not only looks good but it also feels very sturdy when secured! You get a nice dust cover and also a decent cleaning cloth in the package. This retical was very easy to zero in and mount even for a first time player. If you are buying this sight for an ics MK5 remember to also buy a rail for it!
Easy to adjust
Comes with instructions on the sight itself so its basically idiot proof
Has four different reticals
Has 7 different brightness levels
Nothing that I have found as of yet unless buying a rail isn't in your budget.
Rating: [5 of 5 Stars!]