Hello. I am thinking about getting a set of these for my 2nd Gen G17 which will primarily be used as a range gun. It currently has a set of night sights and the front sight is held in by a hex bolt. Does the truglo also use a hex bolt for the front sight? Does anyone have experience installing them? http://www.topglock.com/item/43061_Truglo_Sights__Lasers_TRUGLO_BRITE-SITE_FIBER_O.aspx These are the fiber optic only version, no tritium. They also sell these sight tools: http://www.topglock.com/item/174164__Glock_Parts_GLOCK_FRONT_SIGHT_TOOL_H.aspx?SR=1 http://www.topglock.com/item/61534_...s__Lasers_HIVIZ_GLOCKTL_GLOCK_TOOL_.aspx?SR=1 Are they compatable with the truglo's? I was planning on re-using the old night sights on my G21 or G30 if possible. Thanks for all the help.