That depends on whether the grips are made for the old long grip frame small Colt's or the later "stubby" grip frame.
Old long frame grips will fit the older Detective Special, Cobra, Police Positive, and Police Positive Special, but will usually have a square butt that won't fit the Detective Special and Cobra without rounding off the wood.
If the grips are long grip frame and square butt, they fit the Police Positive and Police Positive Special.
Grips made for the post-1966 "stubby" Colt "D" frame will fit newer Detective Special, Cobra, Agent, Diamondback, Viper, Police Positive Special, etc.
Here's the difference in frames:
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.