chaos... the ability to use the dot at night compared to a tritium sight system was the determining factor for me.. I've started shooting a G17 with a Vortex Venom for Steel Challenge, and added a Venom to my Advantage Arms .22lr conversion unit via DPP Titanium 7075-T6 dove tail adapter...my original Heinie Slant Pro sights are still partially visible at the bottom of the RMR window in case of a catastrophic failure

I've shot a fixed sight pistol for USPSA for over 35 years... my Limited M card was earned with a single stack 1911 in .45