This grips fits the below "D" frame revolvers that are made after 1966.
Steel Frame Revolvers (Serial #D900101 and above)
• Colt Detective Special
• Police Positive Special
Lightweight Aluminum Frame Revolvers (Serial #200101LW and above)
Will NOT fit the 2017 Colt Cobra
Will NOT fit pre-1966 models with longer grip frame that has rounded bottom corners. Verify your frame by measuring distance from rear sideplate screw to grip stock-pin. Older/longer frame is approx. 3 1/4", while the newer/short frame is approx. 2 5/8".