Hello, my name is Dan (Sideburn ) and I own a few antique guns. My recent aquisition is a 54 cal. rifle ( muzzleloader) and I was looking for a peep sight to install on this gun in order to improve the accuracy. That's how I found your site. Basically, I still don't know what to chose between the Lyman or the Williams FP Hawken but I'm reading everything about this topic so I'm confident I'll find my answer.