If I say “old school cop gun,” what do you picture? I guess it depends on what you grew up around. For me, it’s the S&W Model 10—a six-shot, medium-frame .38 Special revolver. Honestly, it makes me feel a little old to admit that the S&W 5906 qualifies as an old-school cop gun these days. Production started in 1989, which makes the design 35 years old.