LC9 because if the rear sight comes loose a spring loaded vertical plunger pops up inside the sight and prevents the gun from firing. Weirdest design flaw ever.
1860 army, 1851 navy. Too damned hard to clean.
P345 Ruger. Fired with safety on. Hard to pull trigger. Too much distance from front of trigger to front of grip.
Lyman great plains flintlock. Too many sharp edges. Nasty curved buttplate with sharp pointy bottom.