What type of pins are supposed to attach the front sight on Galils? I have a kit built on a Galil receiver & the front sight is held on with roll pins, are these correct? Can they be retro-fitted with solid pins? It looks like my front sight base may have crept forward about 1/16" or maybe less. I was wondering if this may be because of the roll pins, or just the parts settling in. I have shot about 100 or so rounds through it. Thanks in advance.

Roll pins are what is standard.