WANTED. For Redfield, Williams, Lyman, Unertl type front globe sight. These used to be dime a dozen but I be danged if I can find one now with flat base. Need a flat base, 2 screw model. Screw holes standard, around .550" spacing. Preferably shorter profile like pics from my bench barrel. Let's say $20 price point or I'll just order one of the radius base versions and grind away. Thanks