It’s a great scope. I still really like it and expect to be pleased with it for years once it comes back from them. Other than the dial not lining up perfectlyThis thread got way off topic... So much so that I went and bought a MK4HD 6-24x52mm PR2-MIL and will see for myself what's going on. I've heard good, I've heard bad. And it's easy enough to send a scope in for warranty work if something is wrong with it from the factory.
Now, it failing in the field? That I'd like to hear about ... And I haven't heard many stories of one failing. So I'll gladly comment here once I got a chance to compare the MK4HD to my MK5HDs.