B-square for blackhawk and BSA red dot

[pangborn83]

Hi all I have a b-square no drill mount that came off my newly acquired used blackhawk .44 mag. I didn't shoot it with the red dot a ton but in the 50 rounds or so I shot it didn't loose it's zero that I could tell. Stainless (I believe non magnetic and silver can believe it I aluminum) 50 shipped? Also have a BSA pd30 silver that was with it $30 shipped? 75 tyd as a package