I own an Encore, muzzleloader shotgun,,and with these old eyes, i couldnt see the sites very good,,blurry, need bi-focals,, I put a peep site on,, made for the encore, and its a world of difference,, They are a direct replacement,, and it has a removable insert ,so you can remove and have a larger site plane.. You will love it,,i do.. Much more accurate also...