I just purchased a 1911 military by ATI so far a great gun especially for the price. With one flaw... front sight flew off while shooting! I ordered colt 1911 sights assuming since it's a colt wannabe I might luck out, no dice. Front sight is a tendon style and rear is dovetail. Has anyone on here had any luck with aftermarket sights? Or know what the dimensions are? Thanks in advance!