Over the years, I tried a number of optics on paramilitary rifles.
Every "el cheapo" I've bought was a mistake.
I am now firmly convinced that if I need a RDS for a fighting rifle, I will hold off and save up my money. For a RDS it will be an Aimpoint or EOTech. For a scope it will be an A.C.O.G.
There are many less expensive optics out there, but I will save for a while and get the best.
If I should ever (God forbid_) need to use the rifle for serious social shooting, these are far cheaper than a night in the emergency room or a funeral.
I didn't fight to defend your freedom so you could vote to take away mine.
"A man who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself.
John Stuart Mill."