One of my duty revolvers was a 4" Model 19. My backup was a 2.5" Model 19. When I carried either a Model 29, my Model 27 or my Model 53, my back up was my 2.5" Model 19. The 29, 27 and 53 were all 8 3/8" nicklel with a smooth trigger, target hammer and Oversize Birdseye Maple stocks. It helped to know people at the factory