Williams fixed sights

[clbshooter]

Hello all. I just got a 522 and it came with Williams fixed sights but not installed. Has anyone used these? Looks like the front sight is attached to the gas block and the rear just goes on the Pic. rail. The gas block doesn't seem to be very sturdy for mounting a sight on. I am just getting back into shooting and would like to also mount some type of scope or device to help my not so young eyes, but I also think the iron sights should go on the rifle as well. thanks in advance for your help

[imschur]

can you post some pictures?

[clbshooter]

Sorry I can't post pic at this time. I have been out in the garage messing with it and got them mounted but it sure is a cheesy way, in my opinion, to mount a front sight. The front is a circle with a post and the rear has a sight aperture. There are marks on the gas block and the front sight so I aligned them. Looks like all of the adjustment is in the rear sight. I have never put sights on a gun so I don't know is this is normal. Any more insight would be great thanks.