Scopes are mounted on grip frame mounts...
guns are slid onto plastic coated steel rods... ( Steel rods had the ends rounded, & all the burrs polished off before coated in heavy heat shrink tube...
BTW... guns are coated in a thin layer of sawdust for storage...
actually I'm still doing wood work in my safe room, so they get wiped down, after each carpentry session, & will get detail cleaned after I'm finished, or before they get shot ( which ever comes 1st )
this is a pic of the 50 from the other side showing the grip mount... a HandAll JR slid over the grip frame gives a pretty large purchase, but I have big hands & it works well for me...