My G20 is now fitted with a 6" aftermarket barrell and a RMR red dot that I take when hog hunting. Very satisfying accuracy and quick to get on target. Usually take only 1 round of 180Gr either lead hard cast or copper plated Berry's over Blue Dot to harvest a 2-300# Boar if you place the shot in the cranium cavity or just behind and low...I have a Glock 20 and its awesome. Nothing wrong with a 10 mm in Polymer frame