My favorite duty pistol was one I purchased when starting full-time law enforcement (check out my first duty pistol on that post).The gun I purchased when starting full time may be considered my first duty one, but you'd have to put an asterisk by it. The gun was a blued 4" Mark III Colt Trooper, loved the heft and feel of her over the Model 66 S&W my new Chief of Police tried to talk me into, besides it was a COLT. After about six years carrying it in 1979, I sent it into Ma-Na-Port Arms, had it mag-na-ported and had a met-a-life finish put on it(love this finish-wears like a diamond, think it looks better than stainless steel). After gettin it back, I installed a set of Trapper springs and slapped a set of Pachmayr grips on it. Sweet shootin'. Carried that gun the rest of my career, except when the city bought some Mod 66 S&W and I had to carry the Smith a couple of years. Liked the Colt better, still have it. If I were to wear a badge now, I'd strap 'ol whisperin death' back on, if not it would be one of my all metal Colt or Kimber 45 acp's-not a fan of the plastic/polymers. The Colt Trooper could shoot em all; 38 Spec wadcutters, 125 grain 357 Remingtons, 140 grain 357 Winchester Silvertips, 156 grain cast bullets over 13-15 grains of 2400, ate em all with authority and accurate. Probably why I like the grips and feel of my Dragoons and '60 Army C&B's over the '51 Colt Navy and Colt Model P frame, they feel more like my trusty Colt Trooper. Same thing with my old model Ruger Vaquero over my new model Vaquero, more heft-ya feel like yer holding onto something. In my opinion Colt should still be makin the Trooper, Python too.