Ran into a fellow down at mossyrock and he had a .54 cal Knight muzzleloader, he had what he called "truglo" sights, they had Williams name on the base, but the upper adjustable half was clear plastic and had the fiber optic on top. I compared my sights to his ( I have a knight .50 cal Bighorn) and his sights with the clear plastic were 10 times as bright as mine. I looked all over online and can't find them. He said he got his from Williams. Anyone have any info???