Often when I travel for work, I will carry my RIA Standard in a Vega 104 holster I picked up from haris1. It works in three positions - straight or canted normal draw, cross-draw (parallel to the belt, action up at about 20 degrees), or upside-down on the small of the back. It has a snap button retention strap. I can sit in the car for hours with it on my left side, and the butt never digs in. Then upon exit, easily move it to standard right hand belt carry, or to my back. It has five different belt loop slots. Best of several worlds.

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Heavily armed old man.