mustang99, the rear sight is not height adjustable. the 2 screws that you can see are holding the entire rib assy. which includes both sights to the gun there is limited windage adjustment. all the roll markings are as rescribed. they are faint due to excessive polishing prior to rebluing. bisley fan, see rollmarkings above. the reason this post was started was to find the magazine article that was printed in the 70's covering the conctruction/conversion of this gun. it began life as a blackhawk and the gun smith deliberatly kept all the factory markings intact. as I offered before anyone that wishes to can see this, you just have to come to Lower alabama. if desiring to see my e-mail is [email protected] you are entitled to your opinion but can we get back to my original quest someone must remember that article. thanks, Bob