Hello, so I think I got a great deal on my very first sight, I've always used flip ups and irons, basically what ever comes on the gun from factory, so I got a recent purchase of a JR carbine 9mm with an EoTech 512 sight. (No it's not a fake) other than the minimal research I've done I was wondering what kind of performance I can expect out of this, also I've read you don't need to close one eye when aiming, just keep both eyes open and have at er. I'm new to sights, any info is great thx 


















































