As you know it's one Eotech 551 Holosight replica from Hurricane, and the iron ones...well, i just made one at my place. I had one original Tokyo Marui handle, and i sawed and painted to use on the M4.
Some guys told me that, using two sight at the same time it's wrong, but, what happens if my 551 goes down, without batteries or even crashes?
I've got the iron sights to make my precision "shots" until the end of the game!!!
STUNTMAN